Hi,
You'll see mostly three types of hands when a decent player flats preflop and minraises the flop:
- 9x/88-TT going for some protection raise
- a cheap bluff
- slowplayed KK+ or 7x (very few of those in his range) trying to induce
We can't do anything about KK+ without reads, we'll get stacked. Depending on whether you think he'll call it off with 88-TT, which most of them won't, 3betting the flop to look bluffier might be fine. When you do tho, he can't bluff anymore if that's what he was doing. Since we're in position i'd mostly just flat to see if he wants to bluff again (or bet something else who knows :p), and shove over a turn bet.
I think the same mostly applies to a bad player, except he's more likely to call it off on the flop, but he might also be bluffier so who knows. You can't really go wrong there, but imo if villain is a decent player you stand a better chance to get more money from worse hands by simply calling the flop provided you don't have a crazy dynamic of bluff raising either others on dry boards.
Hope it helps.