Suggestions to find coolant leak

Follow-up: thanks for the great tips! I've pulled the waterpump and now pretty sure the leak was coming from the timing cover, so plan to remove and reseal. Just wondering, should I also drop the oil pan to get proper seal on the timing cover? And if so, can the oil pan be dropped without lifting the engine? Was thinking I might be able to do it if I pulled the drag link bar... Mission-creep is setting in!