Always look for an All Risk policy, providing coverage for all sorts of losses. However, evaluate the specific exclusions, including wear and tear, manufacturers defects, marring, scratching, ice and freezing which may be made from your boat insurance policy.
Take care to find out if your policy covers the required length of your boating season. Though, there may be variations in this issue, as a six or eight-month policy might be profitable in the Northeast or Great Lakes but is found to be risky in warmer climates where there is a year-round activity.