Not sure BUT... wondering how your new flow is going??? Any chance of an update ???
Haven't seen that specific stand, but I use one of these as a stand to wash down, work on fins/pad etc.. Obviously doesn't have capacity to hold board on it's edge but works for me 
Picked it up from Supercheap Auto a few years back - seem to still be available : www.supercheapauto.com.au/p/toolpro-toolpro-portable-work-stand-100kg/378439.html
If you do not find one with the slot for putting the board on the rail, music keyboard stands can be found everywhere.
www.amazon.com/Keyboard-Stands/b?node=491024011
Yeah I got one for my keyboard that looks exactly the same.....never thought to use it as a board stand though, might have to grab another one!
