The only time the trims are moved all the way to the stops in any aeroplane I fly is every first flight of the day. By doing that, one gets a feel for the system and hopefully would notice a change of friction associated with slipping grub screws, broken cables etc. On the walkaround I grab hold of the tabs that I can reach and give them a bit of a waggle to feel for too much play in the actuaters while noting their position relative to the controls in the cockpit. Am I so diligent on every flight? Yep, but I make no claim to being perfect. Other stuff I do gloss over if I perceive it as not likely to kill me..
But, that's just one old man's opinion and practice.