Using a turn sheet and 2 nurses
You can find more detailed information on how to make a bed more comfortable for a 18 c1 quadriplegic on apparelyzed.com/forums/topic/3095-beds-for-pressure-relief/page-2
The Pebble Beach Bed and Trundle uses a coaster to slide the trundle under the bed.
I personally think it is easier to slide the bed back,
you slide under
It is extremely dangerous. If you hit your head on the bottom of the pool/sea bed, you can become a quadriplegic/paraplegic or possibly even die.
Bed Load
From under the frame rails.
Pebbles.
it does not have enough friction.
One can make a pallet box for a king size platform bed by following these steps; remove the mattress and box spring from one's bed frame, lay the bed frame on its side, position one pallet on its side, with one open end facing toward the bed, slide the open end of the pallet over the legs of the bed frame, repeats steps three and four, turn your bed back upright and slide the platform bed.
not enough friction
Second Best Bed was created in 1938.