Hi Joe! There are actually 3 pin schottkys that are compatible with the board. The mosfets are rated for 130 amps, but that isolation material is a significant limit on their ratings. Ian Hooper in Australia was saying that he was getting them to blow up at above 50 amps each. But another guy that I can't remember now is running his unchanged at 600 amps, so I bet you might be able to do 700 with other diodes maybe? hehe. Ain't nothing like trying it. I found out you could run the controller at 192v nominal for several hundred miles! haha.
Digi-Key - APT60S20B2CTG-ND (Manufacturer - APT60S20B2CTG)
Digi-Key - 497-11453-5-ND (Manufacturer - STPS60SM200CW)