I'm sorry I don't have any of the pad I made for my Epic which is gone now but I have some pics of the pad I made for my SES. I needed to raise myself just slightly to give my hips some room and take pressure off my sit bones, also relieve rubbing on my lower back bone. And provide more connection with the ski for stability. If you get some 10mm closed cell foam you can laminate it to build or reduce where you need it rather than carving it. So under the outer pad that you can see, there is another smaller dimension pad laminated with Bostick Spray Tak adhesive, this pad has holes in it where the sit bones are, then under this pad there is a third smaller pad up through the middle, to kind of make the seat a little like a bicycle seat and provide more support and relieve more pressure from the sit bones which is where I get sore after an hour in the bucket. I just don't get sore any more. But the pressure is relieved from the sit bones and the reality is I'm hardly sitting much higher than without the pad, I'm just better supported. For my Epic I built the rear up with extra foam than I did the front, this tilted my pelvis and helped me stay forward rather than feel I was leaning back or struggling to stay forward. It takes a few paddles and experimentation to get it right sometimes and it can be useful to have some different thickness of foam at hand, say some 5mm and thinner as well.
Once you have a rough shape of your first piece of outer foam made you can put it in the oven, heat it to 140 celcius and heat the pad, use gloves to put it in your bucket, having already drawn where it needs to go exactly and sit in it in your paddling shorts. It will mould itself to your shape and stay that way when it cools and show where to cut holes in the next lower piece for your sit bones. Then you can laminate the lower pieces as needed. The spray glue dry's pretty quick enabling you to get on with the job.
Finish it off with some two way stretchable material which enables you to slip on the pad for rotation, otherwise the foam itself is too grippy. This also prolongs its life. I've been using mine for 18months now and the outer material is just starting to wear through at one corner.
I suggest you just tape it in place until you are happy with where it supports you or you can remove some material with a sharp knife or a coarse file until its comfortable. Can be handy to take a small sureform on your trial paddles to remove any material if needed. Then you can glue it in with the same spray adhesive that you used for laminating and fitting the material.
I'm getting a new ski soon, I will try and photograph the steps in making a seat for that as I make it.
Sorry you may need a Facebook account to view the photos, I've had trouble posting photos to this site before. If you can't view them let me know and I'll try and post them up again.
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