I've seen a JPRA video at www.digital-universal.com. As for Ripsaw Falls, I don't recall seeing one. It's probably hard to do a video on it since you get so sopping wet!
I'll try filming these rides for you. As long as I keep my camera covered by a plastic bag, I dont see how it could get that wet. (Popeye is one thing I WILL NOT bring a camera on!!!) If I do get them done, I'll post them as soon as I find time to upload them. (you will need quicktime)