With the rt mount on high setting and the rear of the seat on low it gives a totally flat seat profile so you do not slip forward into the tank.
Bought mine used for about £10 and it has been on two r1200gsa wc bikes , combine it with the offset front rubbers and you can have the seat nose high or use it with the offset front rubbers and the rear of the seat high it again gives a flat seat profile just taller