Shooting complex lakes

For the lakes with electric only rule, is truly electric only? Or can you launch a boat with a gas engine, and only use the electric?
IE: on the east lake, with 10hp limit, you can launch any size engine. Use it to load and unload, that's it.

Thanks

Nevermind, found out. Yes you can still launch bigger or gas engine. Only use it to load unload.

Yes sir