crw4374, I own a 19.5' starcraft islander i/o. You will have no problem, just use common sense. The islander series has a very deep hull. Deeper than some of the 24' s out there. It was made with the great lakes in mind. as far as rough water, if waves get over 3' we head in. I have gotten caught a couple time in bad weather that came up fast and threw some bigger waves at us and we took our time and made out fine.
What year is it??