I took my boat in to the dealer for it's 20 hr oil change recently. When I got it back I noted two things:

1) There was some oil spilled in the bilge area (about 1/4 of a quart). As this area communicates with my ice chest via a drain hole, I need this cleaned up. Any advice on the best way to clean up this mess?

2) My engine is overfilled with oil. I ran the engine to operating temp and then checked the oil. It's about a centimeter above the full mark on the dipstick. Will this hurt my engine?