The deck drains that the original owners of our house had installed when they did the pool are scrawny little affairs with a fixed cover that features very narrow drain slots:
Well, the drain troughs are almost completed filled with sediment despite all efforts to Shop Vac or even power wash them out. I can't even tell if the drain channels even have plumbing at the bottom to go anywhere or if they were only intended as shallow "catches."
I've been advised that these are probably permanent and even if I could somehow get them out, I'd probably never manage to install replacements without busting up and replacing some of the gunnite pool decking and concrete substrate.
Anyone have any good options for getting these drains back to any semblance of functionality?
The only idea I've been able to come up with so far is to use an oscillating tool to cut the top away, clear the sediment and debris, then fill it back in with some coarse gravel or small river rock. Anyone ever tried this or seen it done?

Well, the drain troughs are almost completed filled with sediment despite all efforts to Shop Vac or even power wash them out. I can't even tell if the drain channels even have plumbing at the bottom to go anywhere or if they were only intended as shallow "catches."
I've been advised that these are probably permanent and even if I could somehow get them out, I'd probably never manage to install replacements without busting up and replacing some of the gunnite pool decking and concrete substrate.
Anyone have any good options for getting these drains back to any semblance of functionality?
The only idea I've been able to come up with so far is to use an oscillating tool to cut the top away, clear the sediment and debris, then fill it back in with some coarse gravel or small river rock. Anyone ever tried this or seen it done?