You shouldn't be playing *all* hands with the 80/20/15/5 ratios. Hand values change the percentages, as does position.
In Harrington on Hold'em, says raise 80% of the time and just call 20% with Q/Q, K/K, or A/A.
Of that 80% you raise, you raise 3xbb 35%, 4xbb 35%, 2xbb 15%, and 5xbb 15%.
With smaller pairs he limps more often. For example, with 7/7 in early position he'll raise 20% of the time and call 80%. In late position he'll raise 75% and call 25%.
Of course this is is tournament strategy, and I have not read his ring game books yet.
Also, if you're playing dolts just bet big when you have a hand. Mixing up your play keeps the pot smaller with some of your good hands and makes the pot bigger for some of your smaller hands. This is a sacrifice you make to confuse observant players. But if your players aren't going to pick up on that, changing up your game too much just decreases your expected return.