They might work there. You will likely find that using the normal cleat becomes second nature with time though. With wraps around the winch
drum, you can often just wrap the line one turn around the cleat, no figure 8 at all. They also make cleats
with one underside/horn narrow gap it grips the line when pulled thru there.
The cam cleats
would need to be elevated a bit to make them easy to use. The line exits the top of the winch
drum a few inches off the coaming top, so you have to manually push the line down to get the cam cleat to grip it... if that makes sense. I think!