Since this is FR.. in hand 1 and 2 you're behind preflop almost always imo. Leading flop and turn in 1 is mostly spew.

hand 3: I'd probably give up on the turn. I could say something about the weakishness of your bet but I don't think that matters too much (ie, I don't think he attacking weakness, he simply has it).

hand 4: kinda read dependant.. generally if they call the turn and the river changes nothing (like here) they'll call the river too.

Anyway, best to await Renton's input, he is the full ring/nut camping expert :P