Errr, why? In the days when I had a rotating laser I used to set it up in the middle of the longest wall which had no obstructions (such as pillars, etc). Used to work for me and still does with my Bosch GLL3-80P.
Yes. Stop trying to over think it and tack a piece of metsec or metal lath onto the wall and use the laser's magnetic clamp to hold onto that. It's what the metal lath guys do an is how most of the rest of the trades work. Tripods and telescopic poles are often useless in industrial buildings, stairwells, etc so alternatives are often required. If need be you can deal with really long room by doing one end, marking a datum line on the wall and moving the laser further down the room. I did this on a 200 ft long restaurant dining room a while back (suspended p/b ceiling on metal lath), it too 3 laser positions (zig-zagged from side to side) and was out by under 3mm end to end when checked with a surveyor's level later on, so good enough to pass muster (and out less than the plasterer's IMHO)
In that case Google "Caproni Ca.60". It really did fly, although it also really did crash on its' second flight........
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