At 07:16 AM 1/5/2016, you wrote: >I think it has been proven that they work on belly boards going 130 >mph and they don't fall off. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
One thing to consider. If I read Mark's post correctly, his belly board screws are 3/4" long. The aileron spars are 1/4" inch thick. Not much material there for a wood screw. Larry Flesner
