I wear a size 16 mens and use the plastic toe in clips with straps (Just some old shoelaces). I haven't had any problem with fitting into them and actually find them quite comfortable but I do have a semi-related problem; I get massive foot cramps because I end up getting less than half of my foot on the actual pedal so I'm mainly putting pressure on the balls of my feet. After a decent ride it feels like I've been walking on my tippie-toes for hours...

Anybody else have this problem?