http://forums.teamestrogen.com/showt...er+towel+bones

3rd postdown.

I tried it a couple of different ways... on carpet & on a hard wooden chair/bench. different paper towel of course. sit on the paper towel and then I kinda pulled my knees up.

when you get off the papertowel there's going to be 2 impressions where your sit bones are - measure the distance in between those.

If that's in the ballpark of what the bontrager fit kit told you, then you've got confirmation.