We use the shower head method. We removed the shower head and installed a 1/2" NPT female to 3/4" male hose thread fitting on the shower stub. We then put a 1/2" NPT male to 3/4" hose thread female fitting in the shower head. This way we can easily remove the shower head when need the tub for brew things and put it back when we are done.
This is very handy!! We put a 6 foot 1/2 white Marina hose on the stub and normal squeeze trigger nozzle on the free end to do all of our clean up. You have all the hot/cold water you need and a tub to catch the mess! We did put a simple hose shut off on the hose ahead of the nozzle so we can remove the nozzle without turning off the water.
For chilling, we use a plate chiller and a wort wizard vortex pump on the outlet. The set up is easy. We put a shelf across the end of the tub, we put a milk create on the shelf. We use bungee cords to hold the chiller on the side of the milk create faceing the tub. We put a shower mat on the floor of the tub and set the fermenter in the tub close to the chiller. Hook it all up and your chilling and aerateing the wort in one operation ---- Mess free!
Hope this helps