Here is an outline of a system of the sort that monks ought to have to give a bit of depth to the profession.

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Dowsing (or the art of sensing morphological resonations).

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General Principle
There is a morphological field associated with everything. Resonations in this field are why it is hard to do something new, but easy once it has already been done. The main use of morphological resonations that most characters will be familiar with is rote magic. Only the most gifted magicians can alter the flow of magic into something new, but once the new form has been established, magicians everywhere are able to exploit the resonations in the morphological field to cast the new spell by rote.

Morphological fields are particularly the province of those skilled in mental arts. Savants excel in detecting and manipulating magical morphs, while monks excel at the detection of physical morphs, or dowsing as it is commonly termed.

Everyone has the ability to dowse something, and this will manifest itself as being unusually lucky at finding diamonds, or unusually unlucky at falling into a particular type of trap. Monks can train themselves to alter their minds to tune to any desired object, but others must use a specialised piece of equipment, the dowsing rod, when dowsing for anything that they do not have an innate attraction to.

Dowsing is a skill that can be learnt by anyone and improves with practice, but only professions with a strong mental bent are able to fully master it.

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Process
>dowse attune kobold
Focussing your mind on the kobold skin in your left hand, you seek to bring your morphological field into resonance with that of a kobold.

Attuning is a skilled process requiring a success roll. An object with an appropriate field must be held in the left hand, and a bonus is available by holding a properly crafted dowsing rod in the right hand. Only monks can attune without a rod at novice skill levels.

A shudder runs up your arm as you start to vibrate in sympathy with the kobold skin. (Success)
The skin feels like any other boring kobold skin. (minor failure)
The skin twitches suddenly and falls from your grasp (moderate failure)
The skin twists violently and falls to the ground in pieces taking one of your fingers with it (major failure).

Attunement lasts until a new attunement is attempted, or the character makes a hostile action, or the character is successfully targetted by a hostile action. You can dowse for diamonds while goblins flail futilely at you, but if one of them nicks you, or you attack them, it will break your concentration and cost you your attunement.

>dowse kobold
You center your mind and wander aimlessly around the area with outstretched arms.

Dowsing is a skilled process requiring a success roll. The character must be attuned to the object dowsed. Hands must be empty except for a rod in the right hand. Only monks can successfully dowse without a properly crafted rod at novice skill levels.

The rod moves in your hands as if it is a live thing, but without focus. (Success, but desired object not present.)
As you circle around your hands are suddenly move in the opposite direction of their own accord. (Success, desired object is present.)
You waggle your fingers in an unmystic fashion. (Minor failure)
You trip over your dowsing rod and your concentration breaks as you fall to the floor. (moderate failure)
You nervously apply excessive force to your delicate dowsing rod and it snaps! (major failure)

Success indicates different things depending on the dowsed object. A critter could spawn here, a plant could be foraged here, an ore could be mined here etc.