Hey porta how do you like your Tube??
Fishbonz, must really like it- since I collected 6 of them at bargain prices!
Like your fish rod holders. I've also done just about every mod you can imagine- to increase comfort and utility.
They are so light and compact that 2 will fit in a carry on luggage, allowing them to travel with me on airlines.
This compactness is with the inflatable seat bladders, which add a lot of comfort and handle higher loads plus keep my butt above water-compared to foam.
I've learned to how to thread up to class III river rapids with them and how to use them in high winds with stability.
I still have the original bladders from several years ago, the bottom seat ones have seen so much use that the bladders have distorted to a flattened balloon shape, but that added to their usefulness! I have back issues, and use 2 of the bottom balloon distorted ones in the bottom and the back seat sections. Result is the back of the seat gives me great lumbar support by fitting the cup of my back. Just mention to make everyone aware that the distorted ones can still be used.