really, my Deep 6 XXL Eddy is made for people like youI have 2xl Jet fins. I've never found a boot that was comfortable and they tend to be heavy. I appreciate all the info in this thread. I think I am going to try to fabricate some bungee straps as that might alleviate some of the pressure. FYI I also wear 15W or 16D shoes depending on the shoe.
One of the challenges that I am sure that you are seeing is that big fins are generally made for people with normal feet and tall /thick boots. The foot pocket isn't long enough and is damn near square.
I have some aeris velocity x3 that I think are xl/xxl that fit pretty good but they are kinda flimsy compared to what I am looking for.
I am wondering how the diverite xt would work in their largest size.