Yes, think I am going to throw in just a bit more of 2-3”, then will be about 16” deep of 3/4” and throw some 3/8” mixed in as well.
I would go with the easy pro as well, even going two high. Once they were together and in the bog area I was walking all over them they held up fine, maybe A little popping here and there as I didn’t get them locked together as tight as I thought. I even cut three of them up to make smaller blocks to fill in around in some smaller oddball holes, those were okay as well.
I hear ya, on the I can fix it if need be later stuff. Always coming up with better ideas like with this larger version of the bog, after having the pond going on 10 years now. My wife rolls her eyes at me most the time when I say I need to do this and that to fix something on whatever, I just made. She just of the mindset why are you just jumping in and why didn’t you just do it right the first time, just tell her I am not smart enough for that, but I can fix a lot of problems that arise from my method. Of course, I only do this with my own stuff, never really happens with my customers or others stuff.