Have two on sensor side of board, cleaned well before adhering gripples and took for a ride, was very impressed with the extra grip they provide but after one ride one of them half the adhesive has failed but I plan to test some other glues to see if they will hold better. A good product, I definitely prefer the ride with them on than without, still debating if I want to put the other two on the other footpad or use them on another board (have 3 one wheels) Also the packaging was beyond standard - well done Float, will buy again