Regulars just like us, FTR'ers also deal with sooted fishies everyday and lots of them learned to not pay off chasers & pick off bluffs from busted draws.

Rilla wrote that somewhere:
Draw to straights and use flushcards as scarecards.

Nits hate going broke with one pair hands and if their flop bet will be flat-called on 2-flush board, they will assume you are drawing for flush.

I started to incorporate to my nit-poker some turn raises with air/draw, generally it works against regulars if they know you and you know them. If you bluff & show, even if regular knew what you were doing, rest of table will peg you as postflop nutcase and will pay off their stack with a lot worse garbage than overpair/tptk.

This is when the poker becomes fun.