I normally just use whatever brace height is needed to give me a proper bareshaft tune. However, until recently I've been trying to design my bows to get away with a rather low brace height, about 5 1/2" from the handle. This is all well and good, but I've been having some trouble with forgiveness. So in the works are a couple 6' bows, and they will sport slightly higher brace heights than I normally use, upwards of 6 1/2", or there about for tune.