I know this is nuts, but I had extended negotiations with the wife, and I have a "library" of pinstripes on our screened porch that respresent everything from the Plane Base Line to where laser points should be from my right forearm and left arm if my Flying Wedges are correct at Top. They track from one specific spot on the porch with a five iron in my hands. My laboratory.
Don't you love G.O.L.F.!
So far in my quest for precision golf I've sliced open our couch with an iron; dented a doorframe with driver, destroyed my lawn with a series of VJ like divot lines, smashed the lunch box of my daughter's 7-year old friend, broken my parents in law chandelier light fitting (twice!!!!!!!), caused a lady walking her dog to dive roll when I shanked a shot (she came around a corner - I'm usually very careful about these things, especially now!) and put a divot in my ceiling. I wont go into this last one, except to say that it's really good feedback that your alignments are off when you gouge a chunk out of the roof.