hand one is pretty sick 'cause it's 150bb. but you gotta bet more on the turn because it's so wet and there are so many two pair/TPTK type hands in his range. anyway, though, the river is still a shove because he only has like AQ, QJ and Q9 in his range so KJ, JT type hands make up more than 1/3 of his range. EDIT: AQ, etc are the only Q's in his range i mean.

hand two is a bet/fold i'm pretty sure. kind depends on if he would 3bet JJ and QQ, but this fish def calls 3 streets with T9+

hand 3: ugh i don't even know. 3-way pots when two players are demonstrating strength (especially when they're both fish) is prolly a leak for me. i can't see folding this on the flop but you pretty much have to shove if you're not gonna fold because there are so many draws that can complete. it sucks 'cause BU has like 98+ here.