I just ran Gates of Lodore in my Hyside PaddleCat with an oarframe and it was great. I used a 48" wide NRS frame with 8' counterbalanced Cataract oars. I don't think I'd change anything about the setup.
I was sitting ahead of the rear thwart and used footcups for bracing and it worked. I had two big drybags up front, over the "skirt" with myself and a couple lighter drybags towards the rear.
I like having the PaddleCat to R2 on daytrips. It worked great for a multi-day with a frame with support from others for group gear. It's very fun with the frame on day trips... so maneuverable!!! I also have a 16' cat when I need extra people/gear hauling ability.
Just found this post...do you have any pictures you could send me of your Paddlecat fully rigged with frame and gear?