I have 24 ft-52 wall,10 yrs old on second liner..Decided to do it myself.Pulled old liner out ,sand was wet from leak in bottom.going to replace this weekend..I was going to let the sand dry up some..I wanted to add some more sand to it to smooth some area's out..?on putting liner back in.I watched the pool guy's do it the past time's and they are in the pool spreading it out...Then I have heard not to get in the pool..do it from outside...any suggestion's would be very helpful