I have learned not to three bet these guys that light oop, In general, building a pot OOP without a good hand is a spew. Pretty much, I'll add all SC's to threebet versus an annoying button raiser but that's about it, unless h'es way out of line. You can't threebet too much with crap oop or you'll get no credit and no credit oop sucks.
If you are, persay on the BU versus an aggro preflop raiser in the CO, you can threebet the guy a hell of a lot. Most of the time he'll call with way too big of a range and be stuck because he has no position.
PP's don't have big of implied odds unless their crazy because they are folding a lot of flops and they are missing way more hands.