While you're up there, check the rental shop and even their gear shop. Ask if either have any Flows you could possible demo.
I'm not familiar with their shop or rentals so I don't know what the outcome is going to be. Never hurts to ask.
...sorry to be the barer of bad news guy's, but they don't do demo's of SB gear at either Boyne resort.
. Banhoeff's in Petoski might. Give em a call first.