My intension has been up to now that I should paint my pool below waterline tile with an epoxy coating. Using Rustoleums product is so expensive that I can't motivate myself to follow that path any longer, since that option with an painted pool is the least lasting. If pay a lil more than twice as much as for the epoxy painting I can mount mosaik in the whole pool. Sounds to me like an much better option when the pricing is as it is. I think painted pools are nice looking but since the paint doesen't last so long it has to show on the price.
Do you see any problems with mount mosaik in a pool in an enviroment where it can freeze during winter. My intension is to keep the pool freeze free during winter but you never know...