TheNoBSBuddhist wrote:You can use anything as a 'foot-guide' even if you go to a poorly-frequented street, and practise walking along the border of a sidewalk, or in a supermarket, following a line of tiles on the floor... any focus of concentration which aides mindfulness and remaining 'Present' can be a help.
If you don't have the tools - invent them! The limitations are merely confined to the diameter of your own vision.... the skull may be small, but the Mind is limitless....
I like your thinking
But before I go any further with walking on boards, etc., I would like see if there are any references to this kind of technique. I was hoping someone on Dhammawheel has seen or heard of this, as I am coming up with nothing online, and I lost contact with the person who took me to that remote location in the Thai countryside where I saw the walls.
The other night, when I pretended I was on a wall and making very careful heel-to-toe placements in a straight line, and turning and right angles, I found significant improvement at continuous mindfulness and concentration. As soon as my mind wandered, I found my arms shooting out to regain balance.