I'm new to Illinois, live close to a lot of the 25 h.p. lakes. I called DNR and asked what the policy is about running a motor over 25 h.p. You can use the big motor for loading and unloading only. your motor,over 25 h.p. can't be in the water. If caught you will be given a ticket. I guess i will be buying a 25 h.p. 4 stroke mercury.