Starting a new house next week hopefully, and looking at pool designs, I like an free form L shaped pool with one of the side of the L beign the deep in and the other arm of the L being a 3.5 ft or so activity end. Looking at the ANSI guidelines (which I am not for sure are mandatory for residential, but highly recommended, someone can correct me if I am wrong) but for an 11 ft pool, you need a 31.5 feet to get to a 3.5 deep level if you go by thier recommendations. I wanted the "activity" arm being about 20ft wide to play football, volleyball, etc. We have a big family and we always have alot of people over so we are looking at pools larger than average, but 51.5 feet of pool in one direction with about 40 feet or so in the other direction, seems excessive.
We talk to a pool desinger probably in Feb. Planning on finishing the house around August. I am just in the very early stages of planning to make sure we do not need to do adjustments to the back yard area. Thankfully we live on 40 acres so space is not an issue, but I don't want to have a pool that has wasted space either.
Side note: I have been trolling this forum for about a year since we have been working on house plans, and have gone to several home and garden shows and talked to several pool builders and people with pool. I am amazed how much more that I know than most pool "salesmen" just by reading all of your great post. I would guess about half of the information I got from them was completely wrong ( apparently salt water pools are chemical free ) and another 25% of what they say was very missleading.