[Albert Moulton]

Hand 1: Just call his donk bet. If he's drawing, then he's giving himself incorrect odds to do so already. After that, if he checks the turn, you can bet 1/2 pot if its a blank or check behind if its likely to have completed a draw. Plan to check behind on the river if checked to you, and fold to a big river bet.

I'd try to play for a final pot of less than $40 if you can. I don't think he'll be playing bigger pots without a hand that beats yours often enough to justify bloating the pot with a flop raise.

Hand 2: Checking the turn looks good to me. Call a bet from villain on the river up to pot-size even if it's a club. If he checks a blank river, checking behind might be ok if you thought he was a tricky player who would be looking for a c/r on the turn and would try for it again on the river. If he's more of an ABC player who'd lead the river with sets but c/c with TPWK or underpairs just to keep you "honest," then value bet ~1/4 pot to get weaker 1-pair hands to call.