Would it be acceptable to use the wingtip handles to tie down?
What drawing shows the tie down?
We did not build the wings. We do not have a hole where the tie dowen should be attached
If you look at the top of the wings, you will find a small hole just opposite of where the tie downs go on the bottom of the wings. If you ever need a crane to lift your 12 straight up (for loading on a barge for example), you can drill out these holes in the top of the wings, insert 3/8" eye-bolts and attach a lifting cradle to the eye-bolts. Learned this little tidbit on a recent visit to the factory. They are always thinking ahead.
What drawing shows the tie down?
We did not build the wings. We do not have a hole where the tie dowen should be attached
There is the (maybe remote) possiblilty that the builder did not tap the holes for the tie downs. Why would they not open the access holes?
The plans do not specify that you have to drill out the top holes
and my skins have no pilot hole on the top,.
You can use the HW-00003 plastic caps used at the 3/8 holes near the gear: