I never use markers where members of the public have access to the land. Indentations on mole hills, strands of wool, white spray paint; anything that'll point me to the spot but won't catch the eye of a footpather.
Thats sensible, enough..but i personally never use any type, of evident marker,...Thats ok till you end up with a field full of mole hills, then the old timers desease kicks in, but if there’s only a couple of lines of hills then no issues, easy to relocate them,
Yes, i get you mate, if youve alot of 'good' ground, & are having to set a high volume of traps , especially ?