I have rented from The Lake Mead Marina Harbor, and other places. I most honestly say these guys were awesome! Not only understanding but willing to work with you to ensure you have a safe trip.
We rented a Yamaha 21ft and enjoyed it. The equipment is efficient and well taken care off. If you need a boat, need a place that is down to earth, don't mind hauling the boat to marina, and need a boat without a prop. This is the place to go.