Oh! Thanks for clearing up that confusion. That had me worried about another confounding variable.
I think we have now covered all the vital points and have a workable plan. Please understand I'm not there on the boat with you. However I think I have a good handle on your situation. I have high confidence in this plan if properly carried out.
By the way, I love boats. I would dearly love you to post a picture of your boat. She sounds a splendid vessel.
Here is my Marina taken at Sunrise on Benedict Lake Minnesota.
Benedict Lake is part of the huge Leech Lake system. Benedict connects to Leech Lake via an easily navigable short river.