As a long-time customer I have used many of Dingman Pool services including opening and closing the pool , weekly maintenance which includes chemicals ( no more lugging those from the store) , drilling new holes in the pavers for a loop loc cover, as well as installing a lane line and a new filter. No job is too big or too small , and all the work is done well . Billy , Mike , and their crew are knowledgeable , reliable , and most importantly , the pool looks great !