[benwood]

Hand 1:The decision on the turn is whether to "pull" or to "push".A pull action is best when the pot is small &/or they have no chance to draw out on you.A push action is correct when the pot is deemed to be large enough that you will receive a larger EV by protecting yourself against losing it rather than trying to suck in additional bets.
On this particular hand,if you just call,the 2 players behind you will be getting an 11 to 1 return from the pot on their draws when they call the raise.But,if you re-raise,the first caller will get only 6 1/2 to 1(assuming no cap,in which case he gets worse odds).If he then folds,the second caller only gets 6 1/2 to 1 odds also.If one of these callers has a set,he is 35 to 9(almost 4 to 1)against hitting it.If one of them has 2 pairs,he is 19 to 3(a little over 6 to 1)against hitting hitting this.The true odds are actually a little worse than this,because they could easily be drawing at some of the same cards.
Also,the raiser may not have a low,or it may get counterfitted,and the re-raise may keep somebody from getting 1/2 of the pot with a weak low draw.This is a very substantial reason for re-raising by itself.
I hope that this will help you realize that it is much better to protect your hand by raising here. good raise. Ben.