Smed, I have the Korum chair, cracking bit of kit.

Have a look on ebay, thats where I got mine from.

Alternatively try the Octoplus Super Stool, not cheap, but spot on for what you need. http://www.tcfmagazine.com/Reviews/article_79/

another big up for the korum lightweight one here.
plus if you have a preston box all your bits will fit on it~clap

I use the Octoplus canal stool and love it after owning a Daiwa Tournament Pro and nearly breaking my back it’s a god send ~clap

you could try the korum rucksack that the chair fits on to leave your hands free for rod holdall up the hill

There is also the new robo chair by middy/30 plus which is also very good. It has special add ons which are called stargrip systems. They are brilliant and fit on the chair legs. This chair isn’t like the korum chairs where you can add preston bits to it hence the new stargrip system. It is more comfy than the korum chair too.

It’s £120 (i think) but this includes a side tray, a feeder arm with the rest and also a arm for the butt of the rod which also includes the rest. Also inlcudes a couple of bait boxes. By the time you have bought all the add-ons for the korum chair it will be pretty much the same price as the robo chair so it just depends on what you prefer.

Personally i prefer the korum chair because the preston add-ons are easy to get hold of unlike the middy stargrips. It would have to be the korum deluxe version however as the standard chair is a horrible colour.