This is in no way a bash on Ultimate since they make a great high quality seat. Their service is great. I got the seat in 4 days since it was in stock from FL to CT. They extended the 14 day return policy since I would be away on vacation.
I wanted to compare the Ultimate to the Suzuki FC gel. The FC is great for me until about the 100 mile mark. I am 6ft tall and 300lbs (working on losing that)
Ulitmate with the backrest pushes me too far forward. Without the backrest it isn't bad, but I push back in the seat to get a better feel and I come up hard against the backrest bracket with my tailbone. They are aware of this and suggest some riders to forego the backrest and illuminate the bracket. The backrest pulls in and out easily. It has some adjustment forward and back and folds to allow passenger mounting.
I notice that I sit much farther back on the FC gel. I am sitting partially on the upper back portion since it is cup shaped and soft.
The Ultimate also has a high nose which pushes up at my balls and is uncomfortable. See pics below of high nose.
My impression is that if they moved the backrest bracket to the rear of the seat instead of inside they could cut the cushion down and I could move farther rearward. This might not be the best way to engineer the bracket since it comes up against the seat pan now and with my suggestion it would try and peel off the seat pan under hard push back. Look at the real estate behind the backrest, seems like a waste to me. Look at the last pic and make your own decision. Maybe I should keep the seat and modify it to my tastes since it is a really good start.
The Ultimate gives you more room front to back in the saddle before you hit the back portion, but the back portion is thicker. See tape measure.
I hope this helps people with their decision making process. I may stuff the gel seat and then get a grasshopper backrest. It would be less expensive and more tailored fit to me.