Most my sarging at the moment is done with my two mates who are also trying to get into this game. One thing i find that keeps happening is one of us will open a set solo and either myself or my mates at one point will appear and try to get in on the action. An example would be i opened a three set last weekend and after about five minutes my mate appeared, things were going well until this point and he didnt do anything wrong however they seemed to sense somethig was up lol. Was this just unlucky or is there a time frame where a set becomes closed to new approaches or did he approach too soon before i'd gained good enough rappour?

make sure you friend is approaching you, sayin hey man who'r your friends, or somethin like that, and then introduce him to them. just be cool about it.