https://www.amazon.com/Husky-31610-Brute-Retractable-Extension/dp/B00BX9C59Q - Husky Brute Super foot.

or

https://www.fastwaytrailer.com/flip-jack-foot - Fastway Flip Foot 

Of the two, I prefer the Husky although I did have to cut the tube part down and drill a new hole for the foot to fit our driveway Having control over the flip-up foot is somewhat better in my opinion, plus the Husky can go down flat to the tube if needed. The Fastway needs a block to use if there is not enough space to let it flip down. OTOH, the Fastway is (mostly) hands-free. It does need to not be tightened too much and does need a little lubricant so the foot will pivot smoothly and lock into place. The bolt has to be able to slide through the slots to enable it to lock when the trailer front is raised. The Husky's pin locks it in place without having to make sure the foot pivots and locks properly.