I own an Ice Bear Trifecta. It runs on a GY6 150cc motor, a fairly common motor on Chinese-built small motorcycles and trikes.
Because of its rather small wheelbase and stiff shocks, it has an unforgiving ride. Jittery. Every small bounce makes it feel like the bike is bucking left or right.
Riding the trike on smooth pavement is no problem. Riding it offroad at a slow pace is also easy, because of its wide tires and light weight. However, riding the trike at normal speed on bumpy roads is sketchy. It feels like I'm going to bounce right out of my seat. With the open frame design, there's nothing for my knees to clutch. And because of the saddle's convex shape, it's hard to stay centered - it's a constant battle to not slip left or right off the sloped seat. Leaning into a turn is laughable, how can I lean when there's nothing holding me in place? If I lean, my butt slips right off! (Equal and opposite reaction.) It's all I can do to simply maintain my posture and to avoid being tossed off the trike from the centripetal force.
My solution? If you look at the picture you'll see what I added today.
A seatbelt!
I know that installing a seatbelt goes against conventional wisdom. I understand that if my trike ever goes down, I'm exposing myself to the meatgrinder.
However, after riding around today with the new seatbelt on, I can say that my fear of being thrown from the trike has been drastically reduced. With my butt affixed to the seat, I can lean into turns. Most important, since I am no longer threatened with being ejected at a moment's notice, I can relax more.
I am well aware that the trike isn't any more stable with the seatbelt on. I still need to drive cautiously on rutted roads to maintain control. But at least I don't have to worry about falling off the trike, which used to be my primary concern before installing the new seatbelt.
