I have a Buster Crabb 15 x 24 above ground pool and have to replace the top rails. My question is do I have to drain the pool to do so? One guy at e pool store said no as long as I remove one at a time, another guy said I should drain the pool. The 2 straight rails are about 6 feet in length and the angled pieces are about 3 feet in length. Any help is greatly appreciated.