[Solved] How to detect if player hit an object with specific tool equipped?

Right, so with a little bit more of research I was able to figure out how to get the result I desired.

Firstly, I detect when my desired tool is equipped and then "Connect" a function that introduces UserInputService - which detects when the player presses Left Mouse Button down.

local function onEquip()
    toolEquiped = true
    UserInputService.InputBegan:Connect(function(InputObject)
        if InputObject.UserInputType == Enum.UserInputType.MouseButton1 then
            pickaxeHit()
        end
    end)
end

local function onUnequip()
    toolEquiped = false
end

tool.Equipped:Connect(onEquip)
tool.Unequipped:Connect(onUnequip)

The further function Hit() then checks for the player's mouse Target, checks if it's a suitable Target and how far away from the Target the player is. Then, if player is close enough to the Target, they qualify for "hitting" an object.

function pickaxeHit()
    if toolEquiped then
        local Track = humanoid:LoadAnimation(anim_pickaxe_hit)
        Track:Play()
        local mouse = player:GetMouse()
        local target = mouse.Target
        if target.Name == "Stone Normal" then
            if player:DistanceFromCharacter(target.Position) < 6.0 then
                print "Award rock"
            end
        end
    end
end

Hope this helps anyone that has the same question on how to accomplish this.