One type of exemption permit issued pursuant to 68C-22.003 allows qualified commercial fishers or professional fishing guides to operate at speeds up to 20 MPH in some Slow Speed zones while engaging in commercial fishing or guiding activities. (Guiding permits allow higher speed travel only when paying customers are onboard while commercial fishing permits can allow for a variety of activities including searching for fish, setting nets, and/or running crab traps; none of these permits applies on weekends or holidays.)