I've used the bucket seat you are refering to in my Spirit II. Yes it is comfortable when adjusted properly. But I found that it tends to shift around and causes me to sit too far forward. It does not allow my large hind quarters to get the full benefit of the tractor seat. I found a better solution to be the gel seat and backband I purchased from Wenonah. The gel seat stretches over the tractor seat and secures with a sinch cord and is easily removed. The backband attaches to the frame on the back of the seat and has 2 adjustable straps that run forward and attach under the gunnels (I found it more secure to attach them to footman loops rivoted to the inside of the hull). This setup is very comfortable and supportive. This is ideal when used with a foot brace. I can put a lot more power into my strokes and corrections. For the backband you can go right the source at Chosen Valley Canoe Accessories,   (You need to Login or Register