I've posted in the past during a pool renovation regarding crack repair and got lots of good info, but they came back. I repaired the top of the crack (all the way up to the tile!!) with the two part putty, and it held great, but its dark blue on a stonescapes finish and it will look terrible if I run it across the floor of the pool. I'm thinking about simply using a marine-type silicone to fill a very long crack just to stop our water loss. Its pretty obvious at this point that none of the epoxies, putties, staples, etc. are going to stop the structural movement, so I'm thinking that using something topical, clear and flexible is a good compromise. Even if I have to do it every year it will be cheap!
Soooo, does anyone have any suggestions? I used a 3M product in the past on our boat that was for use below the waterline so I'm leaning that way. Any other suggestion or links would be greatly appreciated!