Over the last few years Ive had trouble carrying my seat box. Its only a very ordinary box made of wood with a fibre glass base. I used a trolley especially when fishing on canals but still wasn't happy, some venues are not accesible by trolley. Any way last August(birthday present) I had bought for me an Octoplus Superstool. At first I wasn't too sure but now I think its brilliant. It weighs less than half of my previous box and it will hold everything I need. It seems very strong and is comfortable to sit on. The build quality is excellent. I tried to buy an add on tray but as Mel Wilde said"whats the point of that when your aim is to carry less tackle". I have now realised that there is plenty of room for all I need, any way no add ons have been made for the stool and they are not necessary. Extremely happy with my Octoplus stool.