I see a lot of wrong information in this thread. A couple of things:
1) Leveling a char on HC (solo), with no HC experience (i.e., you have to play a bit more careful coming from a SC experience) can easily take up 6-8 hours. You might be able to get to 70 in 3-4, but usually that's not the case (at least 6 hours is a more realistic estimate based on what I've seen from the several people that leveled to 70 "on their own" for the season journey - please refrain from showing off if you personally are the hero that managed to do it in 3 hours, because you're simply above average then). On the other hand, getting a boost on HC takes 15-30 minutes. Depends on a few factors, but getting a boost is definitely easier if you have zero intention to play HC and delete the character right after hitting 70.
2) A HC boost differs from an SC boost as actually open maps are worse than, for example, cave maps. On a Blood Marsh map with ghosts you have to clear a significant part of the map before the low-level character can join, which means a lot of XP lost. That being said, there are a few simple rules the player being boosted should follow:
Always stay close to the entrance; if anything dangerous appears, leave to previous map/town.
If you don't play the character after getting to 70, take a barb (gets cheat death passive very early) or WD (cheat death passive quite early and Spirit Walk).
WAIT until the booster tells you to teleport ("it's safe"). If you die, you have to restart and waste the booster's time, which is very annoying.
Don't loot *anything*, no matter how many stars there are on the map, just focus on getting to 70 safely.
The booster also has to keep a few things in mind:
Always make sure to clear the entrance of the map (if there are teleporter/chargers/ghosts you need to clear a bit more), then go back to the entrance, tell the low-level that it's safe, wait until they're there, continue clearing the map.
If you advance to level 2+ of a map, make sure to clear the *exit* of the previous level as well - if anything happens, the low-level player can safely go back to the previous map and wait for you to clean the entrance.
3) I don't know what "losing work of weeks" means. Usually people providing a boost are powerful enough to be able to not only clear T6 quickly, but also to not die there - ever. I only played HC for a week, but my barb was good enough for T8+, so boosting someone on T6 was ridiculously easy and 100% safe for me as the booster. (No, I'm currently not playing anymore, so not doing any boosts right now.)
Just wanted to clarify those things, because I felt this thread was going in a very weird direction. Now to your more concrete issue: there are plenty of boost communities, just search for them in-game, ask in chat a few times and at some point you'll find someone. I find it funny that people say boosting in HC doesn't work - in fact, I'd guess that HC players actually have *more* experience in boosting than SC players, because you need back-up characters and restarts after you die, so while some players have only one or two characters on SC, on HC almost everyone has had a variety of characters at 70 - and obviously you don't waste hours on that leveling, but get someone (usually a friend) to do that for you. And since you're boosting one of your friends who just ripped anyways, you might as well get two more randoms in to get the bonus XP. That's why it's not too hard to find people on HC to give you a boost; just make sure to not die, as explained in point 2.
TL;DR: Search for HC boost community in-game, and you'll be done with it in no time.
Edit: You should probably add region+battle tag to your post (I could move the thread to the appropriate LFG forum then).
I see a lot of wrong information in this thread. A couple of things:
1) Leveling a char on HC (solo), with no HC experience (i.e., you have to play a bit more careful coming from a SC experience) can easily take up 6-8 hours. You might be able to get to 70 in 3-4, but usually that's not the case (at least 6 hours is a more realistic estimate based on what I've seen from the several people that leveled to 70 "on their own" for the season journey - please refrain from showing off if you personally are the hero that managed to do it in 3 hours, because you're simply above average then). On the other hand, getting a boost on HC takes 15-30 minutes. Depends on a few factors, but getting a boost is definitely easier if you have zero intention to play HC and delete the character right after hitting 70.
2) A HC boost differs from an SC boost as actually open maps are worse than, for example, cave maps. On a Blood Marsh map with ghosts you have to clear a significant part of the map before the low-level character can join, which means a lot of XP lost. That being said, there are a few simple rules the player being boosted should follow:
The booster also has to keep a few things in mind:
3) I don't know what "losing work of weeks" means. Usually people providing a boost are powerful enough to be able to not only clear T6 quickly, but also to not die there - ever. I only played HC for a week, but my barb was good enough for T8+, so boosting someone on T6 was ridiculously easy and 100% safe for me as the booster. (No, I'm currently not playing anymore, so not doing any boosts right now.)
Just wanted to clarify those things, because I felt this thread was going in a very weird direction. Now to your more concrete issue: there are plenty of boost communities, just search for them in-game, ask in chat a few times and at some point you'll find someone. I find it funny that people say boosting in HC doesn't work - in fact, I'd guess that HC players actually have *more* experience in boosting than SC players, because you need back-up characters and restarts after you die, so while some players have only one or two characters on SC, on HC almost everyone has had a variety of characters at 70 - and obviously you don't waste hours on that leveling, but get someone (usually a friend) to do that for you. And since you're boosting one of your friends who just ripped anyways, you might as well get two more randoms in to get the bonus XP. That's why it's not too hard to find people on HC to give you a boost; just make sure to not die, as explained in point 2.
TL;DR: Search for HC boost community in-game, and you'll be done with it in no time.
Edit: You should probably add region+battle tag to your post (I could move the thread to the appropriate LFG forum then).