Com always has the largest selection of new or used stand up jet skis for sale anywhere. they can be great reliable skis but you have a 30 year old ski. They are hard to find used and for what people want, you may as well spend a little more and buy a brand new one. what is a stand up jet ski called? The stand up jet ski is a special type of jet ski, one that was invented in 1972. Unlike the popular sit-down models, stand up jet skis dont have seats, so you can ride them in standing or kneeling position. Riding a stand up jet ski requires much more effort, practice, and athletic skills, which is why they are much less popular than sit-down models. Selling 2 stand up jet skis, both 1990 kawasaki sx650 in running condition, ready for the season. Trailer has brand new tires, led lights and a folder which can be used to hold 2 skis or as a single trailer for a big ski. jet ski for rent in miami - 50 (miami) jet ski rentals in miami (downtown) and miami beach. Includes powerboat pick up from marina to pace picnic island (beautiful island with beach within the city of miami) and back. yamaha super jet w factory b pipe fla title superjet stand up jet ski - 3,900 (lakeland florida i - 4 at exit 31 kathleen road lakeland fl. ) 1996 yamaha superjet with factory b pipe, vortex air filters etc. The ski is in great condition and runs great but i believe it spun the driveshaft.