The problem with raising as an attempt to isolate is that no one will fold pf to my raise unless it is all in, which the people who would call would either have a higher pp or i'll have a coinflip. even in a 2-3 way pot, these people will flat call you with absolutely nothing. i can end up losing a lot of money with people who even when the flop is all unders will hold on to AK. with a scenario of one over i'm check/folding the flop in most cases because of how everyone will call with nothing, or check/call top pair. i'm only playiong the flop for set value.