Small and Mid Pairs Shorthanded

If you are in a 5 max game in late position or the button with a hand like 55 or 77 and everyone folds to you, what is your play? Assume a raise will be called 90% of the time. What if your bet is called on the flop? Keep bluffing or give up? I seem to be having trouble deciding what to do in these spots and any advice would be appreciated. I usually lean towards betting the flop and turn against one opponent and checking the river down, but most callers will automatically put you on an ace and not lay down if they get any part of the flop. Comments?


Jeff