Just talked to the dealer. They asked me to look at a couple things to make sure it wasn't something super simple.

I am going to add some Stabil in the fuel as i know its older from Oct when we went out in Cali. So might be fuel going bad.

Also Dealer said you can get the check engine light due to Emissions, the engine wont go into limp mode because its ok but the CEL comes on because emissions is out of its parameter.

This might explain the light while surfing but not wake boarding.

Hope to get the boat out again next weekend if the weather holds and can experiment more.

Eighter way dealer said bring the boat in and they will run a scan on it and they can look back to when the light first came on and check things out even if the light isn't currently coming on.