You can also shim you stab for more down force, this will help with your front foot position

Yes the loop was ca 70mm instead of 65mm. The knot slipped a little bit. Didn`t pay too much attention on this detail, now i will keep an eye on it.

A guide in photos, add the text later: IMG_20200619_090233.jpg IMG_20200619_090306.jpg IMG_20200619_090338.jpg IMG_20200619_090556.jpg IMG_20200619_090621.jpg IMG_20200619_090631.jpg IMG_20200619_090649.jpg IMG_20200619_090800.jpg IMG_20200619_090812.jpg IMG_20200619_091056.jpg IMG_20200619_091127....

Try some Torx, they often fit into the hex. Same with the old North stopper ball

To undo the knot you can use pliers but often you will pull out some single strains and thats not intended. The smarter way is to wet the knot with water,some use a drop of olive oil, then tap it gently with a big spoon, a round stone , little hammer etc , or just chew it. 2 min job and it gets lose

I had the frontal collapse too after LMT.
I shortened only B in two steps, for now 2cm. 1cm was not enough. Now it is stable while foiling, jumps huge but is not fast when flying cross the wind window.

You can use your Ozone bar If you change the pigtails at your Slingshot kite. They have quite the same length, you can change the fronts vs the back pigtails

5ft x22" or 150x 55 is way too big. If you are kind of normal size go for 130x46 It seems that bonding Xps / wood works better with a PU glue. That was the result of a test a very good board builder did, he compared diff bondings. Epoxy works, but PU was way better. The leash could be a simple 4mm d...

In rockclimbing dyneema sliding on dyneema is a no no , bc of melting the fabric. The intention to make the rig free of metal is good, but aren`t we talking about a tiny steel ring what is saved for this solution.
https://flysurfer.com/files/2020/06/RAC ... fety-1.jpg

Here is a laminate calculator https://www.r-g.de/en/laminatecalculator.html Can not help you with yout initial question, as you don`t mention lenght and width. Remeber the wood will drink a lot. Better some left over , than running out of epoxy. Overthink ply on bottom, it will be heavy. Think inste...