Fins and foot pockets

[Gr8 Fish]

Hello all!
I need advice about fins
Which stiff negative fins have high and wide foot pocket while being small size?
What can you say about dive systems fins?
My boots size is euro 37 and I simply can't use them with L or M size RK3 fins, JetFins or Slipstreams.

PS. I know that xxxl Jetfins are enough, but they are too big and so my husband can sleep safe - I am not going to steal his fins!

 

[JMBL]

Those are maybe what you're looking for, I've been using them for 4 years or so, while dry suit diving. I needed wide foot pocket for my 12/44 size feet + rock-boots. It was the sole pair of fins able to accommodate me. But beware, they are VERY stiff indeed. Size start at 37, S model.

Mares Power Plana