i almost never allow my bigs to play anything but -2, but i'm also talking high d1 where every meaningful game i play, i face an opposing big with 90 ath and 90 def. sure, the speed is important in the per equation, but def is primary and ath is a still meaningful 3rd. so, even if the guy is 10 speed, his per defense is still solid, because of the 90 ath/def. meanwhile, my big might have like 45 speed and 55 bh, with his 65 per, and those ratings are still garbage relative to a 90 ath/def 10 speed. in d2/d3, i prioritize reb and def so heavily that i never really had many opportunities to take 3s with my bigs. so, not something i use - notwithstanding the conversation we just had.