I'm sorry, but the h4 on dantooine is one of the easiest groups to form, just use LFM, and you'll have a group in a min or two. If you aren't getting a group, it's something you are doing. ie, using LFG. or too many people on ignore, etc
Yes, they are soloable, but not everyone can do it, I haven't, the best I've done before was 2 man, 2 companion job, and to be honest, it was probaly becuase the other person was really good.