Used to do both bike and motor trial. Never got my own motor trial but rented one two times a week for a year and got completely hooked on it, I would have loved to continue with it but it was to expensive. Never got that into bike trial tho but learned the basics and it was allot of fun, I think I might have continued with it if I had a 24 or 26 bike and hydraulic brakes instead of the 20 bike I had. Never really liked those really small wheels and pedal kicks etc were really hard with shitty brakes. Found pedal kicks and other stuff like that to be easier/more comfortable on my 26 dirt jumper so ended up not using my trial bike that much.
Kind of thinking about getting into bike trial again tho if I find a better bike for a good deal but I just got a new fs bike so that would have to wait until next year.