You may want to join an inventors club or sit down with a patent attorney to see what you need to do to protect yourself legally, and then contact the top 10 pool designers in your area or in the country to see if there is interest from a manufacturer's standpoint.
You may also want to test the idea with current pool owners to see if there is an interest from a direct and/or a retrofit standpoint. Regardless, make sure you are protected from a legal perspective before you start shopping your product around.
Alexis Ohanian, co-founder of social news site Reddit and partner at startup accelerator Y Combinator, talks about how platforms like Kickstarter are making his role as a startup investor more challenging.
The way most Americans pay for college -- a patchwork system of loans, grants, and scholarships from colleges -- was largely created generations ago, when fewer people went to college and when the price tag of a college was a lot less.