Getting it level, square, line laser way to go!

[Ed Snyder]

Cheap and VERY useful is getting yourself a line laser, I use it daily in my work as a carpenter (these daz!)
Best is the Lufkin Line Laser ($AUD375), it can be locked so you can hang it from the ceiling to get a cross hair line, for example, having one line on the center line of the hull, deck etc, and the other 90 deg line used to get that bulkhead bunk end what-ever line looking square one the boat.

[Ed Snyder]

This time using the line laser to level the hull, the hull cradle often sinks into the ground after a good rain..... This is another laser I have, two is useful at my 'job'

Here I have the laser set to just 'kiss' the top of the bearers to re-set hull level, I found the hull bow down 10mm, out with the jack and 10mm ply packer into the cradle, all done in 5 min.