Getting into trouble with the 2nd nut 4 flush.

[Nigel]

I have been making 2nd nut 4 flushes on the river in heads up confrontations with reckless abandon.

I am raising these and I keep running into the 3 bet vs. 20/12 types, but don't have the discipline to lay these down.

Does anybody reasonable bluff-raise or 3 bet the 3rd nut here, or do I just need to turbo-muck when this happens? Should I be folding the the reraise from anyone short of maniac status?

I used to catch some clownish reraises in these spots, but not anymore. In fact, I have been behind to the nut flush so often as of late in these spots that I am starting to feel like a donk just raising the K high flush, lol.

Thanks, hopefully one of these days I'll figure this game out...

Nigel