I was experimenting with blocking bets. Should I just check/fold hand 2 on the river or what? Check/call is more expensive since he'll bet 1/2 pot

what would he raise the flop and bet turn with that is behind what I have? he could POSSIBLY have a 9 or a weaker king, but am I really calling a large bet on the river?
of course, I could just be losing extra $5 every time I blocking bet like that...