We’re doing a remodel of our 30 year old, 50x15’ pool to update all finishes and add a spa. We’re trying to do a spillway that goes across the walkway into the pool, as (poorly) rendered here:
We also want to keep our fairly new automatic pool cover. As part of the renovation, we plan to switch to an encapsulated cover track that sits just below the new coping and bottom of the spillway. 
Here’s the puzzle: we want to do an SWG (thanks to all the great discussions here!), so we’re favoring porcelain pavers, which max out at 2cm thick. This doesn’t seem like enough depth for a spillway (1/2”)? But, I’ve found some L-shaped porcelain coping that gives us a 2-4” edge. Seems perfect! Except that this is new ground for our pool builder, who says the coping needs to be the same thickness throughout to work with the cover track.
Is there a good way to put the track into the wall, independent of the coping? Or, since we’re planning on pouring new concrete as a base for the pavers - could that be formed above the bond beam, over the encapsulated track, to fit the L-shaped coping? Other ideas?
L-shaped / rebated / drop-face coping seems popular outside the US. (I’ve dug up a handful of sources for both porcelain and natural stone, if any of you are looking.) I’ve got to imagine at least some of them have pool covers and this must be a solved problem?!
Thanks in advance for any ideas!
Here’s an inspiration shot of 2cm porcelain pavers across the water, and one that’s a little like how the spa will look (but lower to the ground and without all those joints in the face):




Here’s the puzzle: we want to do an SWG (thanks to all the great discussions here!), so we’re favoring porcelain pavers, which max out at 2cm thick. This doesn’t seem like enough depth for a spillway (1/2”)? But, I’ve found some L-shaped porcelain coping that gives us a 2-4” edge. Seems perfect! Except that this is new ground for our pool builder, who says the coping needs to be the same thickness throughout to work with the cover track.
Is there a good way to put the track into the wall, independent of the coping? Or, since we’re planning on pouring new concrete as a base for the pavers - could that be formed above the bond beam, over the encapsulated track, to fit the L-shaped coping? Other ideas?
L-shaped / rebated / drop-face coping seems popular outside the US. (I’ve dug up a handful of sources for both porcelain and natural stone, if any of you are looking.) I’ve got to imagine at least some of them have pool covers and this must be a solved problem?!

Thanks in advance for any ideas!
Here’s an inspiration shot of 2cm porcelain pavers across the water, and one that’s a little like how the spa will look (but lower to the ground and without all those joints in the face):

