Took a pic of my set up.
So you need two types of stands, on the right there's my shaping/sanding stand, on the left my glassing stand.
The reason for this, is when you glass and wrap around the rails, you need a narrower and higher stand, so you can access the underneath of the board.
And when shaping and sanding, you need stable and full width support. It also gives the "U" for holding the board on edge.
I have two tubes set into the floor and braced. The stands just slide into the tubes and are height adjustable by the peg and hole method.
In the background is a side light, this helps with showing up high and low spots when shaping.
But in emergencies I have managed on a couple of carpenters work stools, but they are a bit low and very hard to glass around the rails.