I also shopped recently for a lower rate, but discovered that Markel is supposedly the only admitted company writing airboat insurance. A bit of info, if any of you guys carry an excess liability policy,aka an Umbrella, make sure your underlying airboat policy meets the requirements of the excess policy. Some excess policies require an A or B rated company which you might not have on your existing airboat policy. This could leave a big gap in coverage that you assume you have. Just a little info from a guy in the insurance biz.