Found a site that sold Vans Ultracush insoles and put them in my Sk8 Hi's. Such a good decision. The difference in thickness is striking. Link in the comments for the website
Vans Pro Ultracush Aloha Low Shoes Mens 11 Black Tropical Hawaiian Floral Print | eBay
Vans Ultracush pro Mens Size 7 DARK GRAY - World's #1 Skateboard Shoe | eBay
Vans Ultracush Pro Rust Old Skool Suede and Canvas Mens Womens 6.5 Shoes New | eBay
Mercari: Your Marketplace | Mercari | Vans, Vans sneaker, Vans off the wall