Thanks for all the replies!
There are a couple of aftermarket seat manufacturers you could call on to see if they can stitch something together for you. Seat Concepts comes to mind as one but I know there are a couple more that will custom make a seat for you.
They are all quite expensive, and none of them seem much higher than the stock seat. I've read some people pay 100s for aftermarket seats, then plop an airhawk on top. Doesn't sound right to me. To be honest, I was hoping to do something myself, but don't want to end up with a lumpy seat.
Just saying did you follow the instructions with the airhawk? Most people blow them up too hard they only need a couple of psi to work correctly. Also if you only used it for a couple of minutes and decided you didn't like it (as I did) perhaps you would get used to it with a longer ride.
Other than that I suggest you go to an upholsterer and have a chat with them. I had a local guy do my seat and it was great. It helped that he also rode bikes himself.
I've tried it every which way. I even tried it with a piece of camping foam under the bladder. I will keep experimenting with psi. Maybe I will get used to it. The problem for me is that I am aware of it. It feels like I'm sitting on a crease.
The only real way to raise the seat is to get it redone by an uphoster. They can cut the foam and add layers to raise it... and if you are doing this get them to reshape it to fit.
Raising the the front mount is a quick fix, but IMHO it opens up the under seat area to more water and dirt.
Seat Concepts I don't think offer a Tall seat option, but my SC heavy duty foam base did raise the seat front ~5cm higher.
I think I may go the upholsterer route. I imagine it could be costly though. I wonder if I'd need a new cover if I were to pad the seat up?
I see the name Seat Concepts popping up again and again in the forums. I must take a closer look.
Wrote to SC and they don't do "raising"
But they do mention that the firmer foam add a bit of height
If I ever find the time, I will mold a positive and a negative of the frame under the seat and the pan under the seat, try to match those and make a final mold to pour aluminium, hence making a custon riser (think that 2" would be enough) ... Being thinking about this for a while, but my comprehension of pouring that thing is a bit limited and I need to think this true before I get to a foundery where I'm shure things will be expensive ...
That or find a total V and cut and weld the seating area frame onto the existing frame while making shure that it's welded a bit higher. But that's another challenge ... Don't whant the bike to look like Frankestein ...
Not entirely sure what you're planning there. Would you not end up with big gaps either side the seat?