Shock Advice

Took the Xp out the other day just for a nice easy cruise on some new trails. The trails were rocky/ bumpy. Usually ride snowmobile trails and 2 rut trails at higher speeds and never really noticed the stiff ride. Is there a way with the clicks on the shocks to set them? Anyone have good setting? Such as turn the nob all the way down and go 18 clicks in or something? Or change the springs tensions? Going slow for an easy ride was quite rough and almost un-enjoyable. Also need to take care of the squeak in the shock!