Just floating an idea... Badap boom ting! <a href="https://www.joann.com/search?q=foam+sheet" target="_blank" rel="nofollow">https://www.joann.com/search?q=foam+sheet</a><br /><br />Something like this shape; <a href="https://cdn.shopify.com/s/files/1/1653/0327/products/DSC00212_2000x.jpg" target="_blank" rel="nofollow">https://cdn.shopify.com/s/files/1/1653/0327/products/DSC00212_2000x.jpg</a> ...only on the top and bottom of the arms... EVA foam stickers (like the landing feet), only made to the dimensions of your frame plates and arms; Could probably poke a hole in them and put a zip tie through them to make sure they don't go anywhere. They might need a classic house shape 🏚🏠🏠🏚🏘 if you need more buoyant foam volume to float everything, or there could be a couch layer of EVA underneath some ummagrip sold as a sandwiched single product.<br />...<br /><a href="https://www.youtube.com/watch?v=Fy1v5bJQ4j8" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=Fy1v5bJQ4j8</a>