[StellarWind]

If you pay attention to nuances you naturally vary your play without making any special effort. Take Trix's overcards example. No two hands where you raise PF and flop overcards are exactly alike. There are differences in pot size, board rank and coordination, position, number of opponents, type of opponents, back-door draws, etc. If you consider all of these factors you naturally play it all sorts of different ways without ever deliberately making anything but the best play.

You also should realize that as a tight player you don't provide information about your post-flop play very rapidly. Your loose opponents cannot learn as much about you as you know about them because there is so much less data.

I also have a theory that most online players notice only the 1-3 most conspicuous players at the table. If you have a too-clever or rude screen name and constantly chat you are doing more harm to yourself than any amount of deceptive image play could possibly fix.