I use solton pedals for arranger side of x1v to use while playing guitar.
I used plywood and it includes a sustain pedal for seperate piano and a volume pedal for right hand swell of x1.
I mounted a set of 13 switches ie solton drum footswitches on top of the arranger pedals(we call em cow tits).
I use a little iron frame to keep the top set from falling of or moving .I carry it all incl five gang sockets and relevant wires using a slot cut out of ply at the EFG notes ie ply extends about two inches outside cowtits at my feet side.
Reason for drum footswitches on top is that otherwise I would have to swing my foot/feet outwards like a loin dancer to hit drum switches. Most times I cannot see the drum switches, but I can manage. I made a stainless steel stand to fit outside the ply base. It really suits me -- but I once had Arranger and piano and amps and pedals mounted on a rig with two swivel and two non swivel 6 inch pumped wheels and it was a real treat as it was all wired up and ready to go. It used to need four people to lift it upstairs as piano is of weighted keys type and I got independent minded and I ripped it up and now I carry each piece in one by one and I really may go back to some form of rig again sometime. It was inch angle frame and the unladen weight was ok. I doubt if you will need diagrams and if you did I dont know how to do em. Also I only rarely get connected to internet -- busy and problems with length of isdn line. Best wishes to all.And if you so need more info I will get it somehow.PIERCE