I need to research a little more on the Whoopie Slings. I may end up going that route. How hard are they to make? Is there an issue if your trees are too close together?
As far as cinch buckles, I could probably source that style locally.
Oh, and the work involved, I don't mind, it gives me some satisfaction.
I need to shop around on the webbing, I have some of the Harbor Freight stuff already, that is what I used on the snowshoes.