The iboats forum moderators are excited to announce that at this time it appears the iboats forums posting pictures function is working once again. Though we cannot promise for how long, we're hoping for indefinitely.
I don't know where to get those, but have you thought about a large igloo cooler with the seat attachment? I am using that on my boat ant it works just fine. you can anchor it with cord to a cleat. Hope that helps.