Moore Lake is not a suitable lake for speed boats or jet skis. There simply isn't sufficient area or depth to drive either of these vehicles on this size of lake.
Here is a map of the lake:
You will notice that the lake doesn't have a launch for recreational vehicles and that both the east and west bodies of water of fairly small and shallow.
Check out the Minnesota DNR Lake Finder website to research other lakes.
Do let me know if you are looking for a lake home. I would be happy to help.