OK. The obvious answer here is I don't, at least with any accuracy.

I left the telescope inside tonight. There were high level clouds to
the north and I couldn't make out Polaris. I considered taking the
telescope out anyway but left it inside and am settling for
Binoculars. That brought up the question about how to polar align
when I couldn't make out Polaris.

I had some thoughts. First, I could get a good polar alignment and
simply make reference marks on both the ground where the tripod was
set (probably drive some tent stakes into the earth) and on the mount.
Then I could recreate at least a rough polar alignment in my most
common viewing location (read, back yard) anytime I wanted.

I could also do it by simply using a compass, correct for the magnetic
deviation at my location, and use my lattitude.

Because I am just starting to explore with the telescope and have been
having "finder scope alignment issues", I decided to pass on the
telescope until I could get a good polar alignment (which I can do
most nights, I should be out tomorrow).

Any other suggestions?