Hey
I have a Kahuna Big Stick and it works fine and my board is 46in long and I have seen others on smaller sized boards as well. Show us a pic of your board, I am wanting to buy another one soon once stock comes in, looking at a Land Yachtz 40in double drop board. There are fixed or adjustable sticks and carbon or Aluminium like mine.
its great for keeping my balance up and shoulder strength and leg strength, it's also great fun.