On a free form pool with raised spa, are there any options short of a heavy duty cover to keep leaves and debris out of the pool? Builder quoted about 3K for a custom cover which was last year. I really don't want to use a cover but with all the leaves around here in the fall and the oak tassles and such in the spring, we will have to do something. Is there anything easy to put on and off or should I just reside myself to the full cover?