Instructions
Sell the jet ski. Regardless of whether or not it is still in working order, someone may be willing to pay for the craft as a whole or for just some of the parts. Use the Internet to research similar units and determine a fair value. Once you have determined a price, place ads in local newspapers, trade papers and online to gauge interest.
Donate the jet ski to a good cause. While this will not give you the same financial return as selling it, there are a number of charities that would accept the jet ski and use it to help those in need. Many organizations also offer tax breaks and an IRS-deductible receipt for your donation.
Dispose of the jet ski using environmentally-friendly recycling services. There are various organizations located throughout the country that will take the jet ski and strip it of the motor, battery, gas tank and other non-biodegradable parts, then use the rest to help make other green products.