We have a boathouse that we do rent to guest and our neighbor, Highport Marina, does also rent out boat slips. As far as walking distance, it is a good 10 minute walk-driving wise a few minutes.
I don't have a boat, but there is a boat slip within walking distance. If I remember correctly, it's about a 5-10 minute walk from the main resort area.
Thanks! Your answer is awaiting moderation.