assuming you are talking about the landing, can't remember if you said it
it would hurt to fall on it
it would damage your skis to land on it.
if you are going to do it (hopefully you can find a spot without pebbles) you should
a) cover the pebbles if possible, if its like a driveway thats not possible but if its in an unimportant location and you can put dirt over it, etc, that would solve all problems
b) get a ton of turf (or carpet, i use turf for the drop in because it works best but i use carpet for the landing because it slides decently and its cheap and plentiful) cover the whole area where you might be ending up on pebbles. if you know someone recarpeting get theirs. even put an ad in your local newspaper for used carpet. or just roam around on garbage night (for me the last garbage night of the month is when you can throw anything out, don't know what it is for you, ask your parents if you don't know, but drive around on that night and you might find something) if you can get it (again if someone is recarpeting you can probably get it) the cheap blue padding that goes under carpet would help to not damage your skis.
c) b is probably the most logical choice but if you can't do that then just set it up and take it like a man ( i guess) if you have disposable urban skis and the will to bruise and scrap your self for the indescribable joy of summer skiing, go for it.
what ever you do, just make sure you flatten the pebbles (you spelled it wrong haha) as much as possible, if you don't have lawn roller just use a shovel or something. and make sure your supports for your rail or drop in are very sturdy because the ground is going to move on you. remember, have fun with it kids and stay in school.
"When the kids are looking for style, is it within their own minds, or their peers' minds?" - Warren Miller
have you felt this pan?
you need to diversify yo bonds n*gga