Walter O'Brian is a mutant who lives on the margins, salvaging, trading, and...um...doing battle with pirates, though he's no Kevin Costner. This season his band of geniuses has been joined by their new neighbour, Florence (or as Costner knew her; Enola), who at first glance would seem to have a map to add to the teams potential, but seems destined to lead them to more danger.
Given she's most famous for the aquatic adventure, it did seem likely there would be some references made of her history. They have a couple of scenes with a harpoon gun, and a couple other possible scenes, but it's not like there's any jet skis, etc.
The sub story with Sly and his book is amusing, if a little obvious at times.
It's a strong plot to move the team dynamic along and help add Florence's character to the group in the usual Scorpion life and death scenarios.