[TowerTalk] MAST ALIGNMENT

[N4BAA - JOSE CASTILLO]

Hello TT Forum...

Have 12 feet of mast above the top of my flat plat (w/thrust 
bearing)...and want to drill the mast in order to pin the 
boom to mast plates of three yagis to the mast...so they 
will always be aligned correctly with respect to each other...

What is a sure fire (pseudo 'fool' proof) way to ensure I 
get the holed drilled correctly BEFORE I lift the mast in 
place this Saturday?????

Standing by with open brain!

Jose - N4BAA