If you are worried about falls, I'd recommend taking a bath mat. We took one on our last trip to put right inside the door to keep the inside floors dry. Both of our kids have taken some real dingers on the boat - they move too quick and the floors are wet.

(And then we discovered that CYOA now has lots of mats on their boats! Yeah! And they had a dinghy ladder for people who have trouble getting in the dinghy from the water.)