Most boat loans aren't amortized over 30 years. 10, 15 and 20 year terms are more common. A larger loan (+$100,000) would be your best bet for a 30 year term.
There are a number of boat loan brokers out there. Banks are also a good resource for boat loans.
Know your credit score before calling. They will be using your FICO score. To get that, you must purchase it from
www.myfico.com. Other vendors sell "credit scores" but they can vary up to 100 points from FICO and are essentially useless.
Do not let a lender pull your credit until they go over the terms. In addition to rate and loan term (# of years), ask if there are any costs associated with the financing and whether the rate is fixed or adjustable.
Be sure to get at least 5 quotes before thinking about making a final decision.
It is not hard to get a boat loan. It is based almost entirely on credit and the value of the boat. If your scores are above a 620, then you should be eligible. If they are above 680, then you'll have no problems.
If your score is below 620, find out why and what can be done to bring it up.
Most boat loans under $50,000 do not require income and asset documentation. Most above that number do require documentation.