I have the original seat that came on my small LS CUT (xg3025), soon to be made into a buddy seat set out over the fender. I am going to fab the mounts to go from the main seat frame, up and over the fender. I will also make up a footrest that will get mounted to the lower portion of the footrest. The seat WILL have a seatbelt.
When I have the BH on, the wifey instantly jumps on and sits back there! She LOVES to go for a tractor ride! She has no interest in operating it.
Our land is flat, no big drainage ditches, etc... Safety is always on my mind ( I am a paramedic and have pretty much seen it all)... it is not a state fair ride... the tractor is not operated like one. If there is a greater risk doing a certain task... well then she gets off... simple.
I used to cut 5 acres with a Craftsman garden tractor, with a small utility trailer on it. I had made her a flat seat going across the trailer. She rode with me for hours.... we would both get off and be covered in dust, dirt, and grass clippings..... GOOD TIMES!