Prevent the loom walking with the
“firewood method”

You can avoid the walking loom problem as you tension the warp with this method: Take a 2″ section of the warp in one hand and extend it straight out from the loom. Press down on the warp with your knee (like breaking a piece of firewood). Sine the pressure you exert is downward, the loom won’t walk.
This tip is an excerpt from Chapter 2, “Beaming on a Plain Beam” in Book 2, Warping Your Loom and Tying on New Warps– Revised Edition.