So this design eventuated - you can move the shafts with your feet. You can weave indoors by clamping it to the table. It is great for weaving guitar straps or small board braids.
Eventually, I'll make a larger, portable version that can be easily folded up and packed away. This video shows how I use the loom and more instructions coming up on building one.
In November, I discovered free plans for a foldable counterbalance weaving loom by Travis J Meinholf. This might be a loom to consider making if your looking for larger projects.