I use Lynx blocks for my tongue and the stabilizers as well as leveling the trailer, so I have 3 sets plus the caps. The caps are useful for adding a half inch of height, and I've sometimes needed to go 3 blocks high to get level, and I've usually made a ramp up and a level parking surface for both wheels. It takes more blocks, but it seems easier to me. I also have the Lynx chocks that work with the blocks.
Got them from Amazon, the Lynx system seems better than the yellow ones I've seen at Camping World.