The process was easier than we expected, a bit of liquid dish soap and a helper to engage levelers while I set snap pads in place. One of the very first mods we did when getting our class A a couple of years ago, we have been 20K miles since their install and they have stayed on without issue. They are a bit pricey, but as we are getting up in years, having to to place leveling pads upon arrival and retrieve them when departing was a hassle we no longer deal with.
As Sandia Man said, Easy on. We have used them for years on our last 2 motorhomes. They snap on securely. You won't lose them, unless you lose the leveler.
Just giving you something to think about. I went the other route as I wanted to increase the size of my jacks foot print. The snap pads did not do that, at least for me.
I went with bigfoot outrigger pads https://outriggerpads.com/for-rvs/ Yes you have to place them and retrieve them so there is alittle work involved, but for me its worth it. The size of the foot print was the important thing, as we were parked on grass one time during a rain storm. The jacks were on lego blocks at the time. The legos and jacks went into the soil about 2 in. Thats when I decided to increase foot print.
I've never seen a need for the snap pads. They reduce clearance and provide only marginal increase in foot print. In 30 years of traveling in a Class A, I've only encountered one RV park that required some type of pad (that was this past summer) and they provided 4 pieces of plywood which they placed on the ground.
snap pads are great many camp grounds don't want your lander direct contact with there cement pads. has far as falling off once you press them into pad there are not coming off there also give a larger foot print on soft surface's so not to sink as far. much firmer so not a rock