If you go to a marine supply store, you should find all kinds of choices.

Of course, I just realized you are in Iowa and there are probably not many Marine Supply stores around in a landlocked state. Online maybe?

I'm sure you will find something but if not, just let me know what you want and how long and I can pick it up for you and ship it to you. My buddy runs a marine shop so pricing should be decent.

With great power comes Awesome irresponsibility.