So this may be a really dumb question but is the top rail necessary for the pool I described/pictured? The reason I ask is this- the deck that was built around it (came with our house) was in need of some repairs so we started cranking away on that. Well, they built the deck over the top rail, with the caps in place at each splice. To change the liner (beaded) requires either a lot of time and frustration to work under the top rail or removing the whole deck to remove the rail. Also, during the deck repair, I thought it might be a good idea to do a different design around the edge of the pool. Basically frame it out (as seen in this pic: http://media-cache-ec0.pinimg.com/73...8363665131.jpg). While I was looking at that and trying to figure out what sort of angles I would need to cut my lumber at, I was curious about being able to remove the join caps... and then the top rail itself entirely.
So... is it needed?
When I removed this one... it really doesn't seem like it's holding much in place... http://i.imgur.com/twNbSXZ.jpg
Here's the bottom side of the top rail: http://i.imgur.com/bxh7ODX.jpg
I did some searching beforehand and it sounds like removing the top rails is a bad thing but I didn't know if it was a case by case basis... obviously it probably wouldn't be a good idea with an overlap liner