Section 270:25-a - AirboatsI. No airboat shall be operated in the state unless, in addition to complying with the provisions of this chapter, it complies with the following provisions:(a) The airboat shall be equipped with an enclosure to prevent contact with the propeller;(b) The airboat shall not be operated within 150 feet from shore except to go directly to and from a point of destination on the shore and then only at a course which is as close to 90 degrees to the shore as possible;(c) The airboat shall be throttled up only to the minimum extent necessary to raise it onto the air cushion and move at headway speed within 150 feet from shore.II. The director shall prohibit the use of an airboat wherever such use adversely affects the fish and wildlife habitat, interferes with the operation of other watercraft, threatens the public safety, or adversely affects the natural environment. For the purposes of enforcing this paragraph, the commissioner of safety may adopt rules pursuant to RSA 541-A.1987, 370:4, eff. July 25, 1987.