You need length, but . . .

A team needs to have some true big men, if for no other reason than to play defense against the other team's big men. However, one of the really dominant inside players in the Sun Belt was 6-7 - not exactly a big man, although big enough, obviously. South Alabama's Augustine Rubit was a load in the middle, averaging a double-double over his career and shooting 721 free throws (making 72% of them).