After various ups and downs and various stylistic experiments, I've concluded that nut-peddling, even including semi-bluffs, only really works against pretty bad players.
I think the real trick is something that I'd like to call "gaminess"--basically, having the right amount of game in one's play. PF raising is definitely a part of this aspect and one I definitely need to work on (interesting is to watch the action at the big game--almost none of these checked around and/or unraised pots, and I assume a fair number of these guys do know what they're doing).
The difficulty, however, is not going too far in the maniacal direction, which also leads to disaster.
And here, I think I have a very rough actual number for how many times you bet with the nuts or near nuts and how many times with a weak hand: For every time you bet with the nuts, you should be betting something like two times on a weaker hand.
Also extremely important is your own table image: If you're looking nut-peddly, you need to be finding more excuses for buy attempts. If you're looking like you're betting too many marginal hands, then you need to nut-peddle for a stretch.