Ski rental on the Big Island, Hawaii

Does anyone know of a place to rent a ski on the Big Island, on the Hilo or Kona side.

I've rented on Maui previously and the Epic boats and service was excellent but have not found anything on the big island.

There's a guy in Kona named Ian Foo that rents surfskis, but he's real expensive. You can google him for his info.

HYPR surf (now called HYPR nalu) in Kona has some surf skis that you can rent. It's best to call them up to figure out what they have and how much they will charge you. it's not the main part of their business by any means, but the owner is a paddler. (All this was true as of December, 2014, I haven't checked them out since then).