[gary999]

got those adjustable yellow feet on my ladders from midland
ladder.co nice big surface area on them plenty of grip dont think i would
trust spikes for all surfaces not enough touching the ground for my liking.

not that i use ladders much these days anyway

[wizard]

mate the spike penetrate the ground and stop when the rubber feet reach the ground .They stop slides and trwists by holding the rubber feet in the ground even in the case if moving feet on the green ladders that is why one needs to see these spikes.On decks the sit in the slits in the wood ( stops slides)