I bought booties the other day and they showed me "pocket booties" that are really slim and fit, well, in ya pocket

Didn't pay a lot of attention as it was not what I was after but think this was it:
www.surfstitch.com/rip-curl-pocket-reef-bootie-black.htmlAlso, you might get relief from marking exactly where they rub and punching a say 10-15mm hole in those spots. If it is cut properly with a die punch so its round it won't rip from there like a cut with scissors etc may.
I have seen that done on the side of dive fins to allow a bit more stretch for those with freaky wide feet.