I just actually measured hook and cg here are my numbers.
CG 106mm 1 inch out from side of fuse. From root + another .5mm?
I took skeg off and measure from tip of nose to LE at center and it was 445mm. Turn plane upside down, measured to 445m and mark. From there to back edge of tow hook is 108mm, and like previous post, even with hook there, it is rock solid on tow.
So, does that mean CG should be around 108? But thats with 10-20mm camber and still stable.
I was off a little from my previous post
. Hope this helps.