I am sorta a beginner and just found this quick (ish) method. I did it on a level 9 trike.

Equipment: Narotics, bow, arrows, lots of berries (around 100 or something)

So what you do is you find one pretty far away from others and shoot is with about 2-4 arrows(with narcotics on them (forgot name)) and do this from a distance. Then put the berries in inv (might need a lot). And now you have your very own trike :)

Named mine spike btw