it aint gonna get sucked thru the mesh on the pick up tho mate

worst case i can see is it getting flicked up between the crank and summet but the likerlyhood of it jumping up out of a tub full of oil (when its gonna sit at the bottom) is pretty unlikerly, whatever makes you happy tho mate, try the magnet 1st done it before and works a treat, for £2 off the market i'd give it a bash 1st