On Thu, 10 Sep 2009 07:57:09 -0700 (PDT), Frogwatch
wrote:

Just ordered a climbing harness from Gonzo Guano Caving Gear for $60.
I will need to make some simple prusiks knots from 6 mm rope and will
be ready to go up the mast and down some holes.

Using one or more foot straps?

Be safe up there. I once watched a guy climb a 120 ft flagpole with
a setup similar to that.