hpripstein - if you want LPDs (low point drains), these can be added fairly easily. You'd need:
- 2 ea 1/2" PEX Ts
- 2 ea short sections of 1/2" PEX pipe (maybe 18" each)
- 2 ea 1/2" PEX turn valves.
You'd pull down the underbelly, locate a hot and a cold line running say, to the kitchen sink and cut into those lines where they run horizontally. You'd add the Ts, PEX pipe and valves.
The one thing to be concerned with in doing this is if you EVER find yourself camping and the temps fall below freezing, these LPDs will freeze as they stick outside the underbelly. Once they freeze, the water in the vertical PEX line freezes and then the freezing continues horizontally along the length of the hot and cold lines. you'd probably lose the use of the kitchen sink first, then other items.
What some have done to their LPDs is shorten up the vertical section of PEX to put it ABOVE the underbelly, then created a flap where they could reach in, pull down a bit on the PEX section and turn the valve.
I've never tried to rotate them, but I'm wondering if a Sharkbite PEX T can be rotated after installation. If so, I could see a short section of PEX on the T with a valve, then rotate that down to drain and back up (90 degrees) to store.
Just some thoughts - I've never done any of this...