Check out my 1999 18ft, G3 aluminum sled (by yahama) with a 1999 Yahama 50hp 4 stroke. This is a popular boat and motor set up in Alaska:

www.Geocities.com/elkruntrail/boat.html

Ignore the price on the site, asking $6500 (paid $11,000 in 1999) Must sell, bought boat more suitable for heading out in the ocean, and dont like 2 payments!