In our testing we have found the VESC mosfets to run a little hot when riding at roughly 30mph. This induced a few thermal shut downs when we exceeded the default high temp setting. You can raise the default limits within the BLDC tool to keep the VESC from shutting down but I think we have found a better approach to this situation.
We have mounted the VESC to an aluminum base which doubles as a heat sink for the bottom three mosfets and added individual heat sinks to each of the top mounted fets.
This unit is now standard in our integrated decks and has alleviated any overheating during extended high output sessions. It will soon be available in our online shop too, feel free to contact me if you would like to get in ahead of its launch and order this model now.