Couple of things you might want to try. First, go to your local resale store and get an old cake pan or broiler pan with sides no higher than 2”. Don’t rob one from the better half’s cooking supplies without permission. The lower sides make it easier to hit. Second, I’ve got an extra large baking sheet, the type bakery’s use, which provides extra protection when doing shout dip stick tubes. Third, on some units, that I know will make a mess, I tip the unit first then remove the dipstick. A bit messy, but hands cleanup easier that floors.