*Note though you can just pick the whole body from the tree, and in the clothify settings you can check "ignore hand/head/feet collisions"

True, but selecting the "body" of a character doesn't do the wole deal. However, slecting the name (eg "figure 1") does select everything in the character.....then you just have to exclude anything that isn't involved, and as pzj99 says, you can do some of that quickly via the "ignore head/hands/feet" in the "Colliide with" dialogue.

Actually, selecting the wole character makes very little difference to the time the simulation takes. The cloth sim doesn't even try to calculate against anything that is way out of range, and the calculations for that are fairly quick. If you're just calcuating for a Tee-shirt, then even if you have everything checked in te figure, it probably only adds a few seconds to the time taken for the sim..

Cheers,
Diolma