Yes you can. Club Marine's Pleasurecraft Insurance extends it's cover to jet-skis and personal watercraft. You are specifically covered for your personal watercraft with the following benefits.
Cover for your personal watercraft up to a sum insured. This can cover you for damages to your small boats e.g. breaking the nose of a jet-ski.
Lay up discounts. This provides you discounts during the seasons when your personal watercraft is not in use. You are still protected for storage risks including theft, fire and storm damage.
Emergency towing. As roadside assistance services are unable to tow jet-skis, Club Marine can offer you assistance if you're car breaks down while towing your jet-ski.