Doing Moon sights isn't difficult. Granted, on a rolling boat any sight is somewhat difficult.
'Did 2 Moon sights on 10/26/2014 at GMT 22:52:25 and 22:53:42 and got within 3 nm after shooting and reducing Vega today at GMT 00:03:21 (for the fix). Both Moon LOPs were extremely close to the GPS location...a couple of miles.
We use only HO 249 and the Nautical Almanac (well, the truth is I've never even held an NA- we just get the Daily pages online for the entire year). If the body is beyond the 29 degree range of '249, Hc and Z are determined using a calculator....which is much faster than "turning pages".
As to Altitude Corrections (this isn't specific to Moon sights- just the Sun, we use the Altitude Corrections Table we found on the web. It combines Semi-diameter, Refraction and Parallax into one figure that's either added or subtracted from the Ha. When it comes down to figures of tenths of a minute of arc
then we round up (or down) as necessary.
Here's another source of Corrections-
As to learning
the art of celestial navigation
it seems the biggest hindrance to learning how to do it
is those that are attempting to teach it. They make it way too complex and hard to understand for those not inclined to math or have spent years turning pages that have print so small that you will go blind.
William F. Buckley- he really did a great job in his Celnav video.
For a successful sight and reduction we made a form with all of the steps in sequence. It's something we're familiar with and not somebody elses form.
You can also compare your calculations for GHA, Hc, Z, Declination at the USNO's sight-
Celestial Navigation Data for Assumed Position and Time
There are an abundance of Celestial Navigation
spreadsheets from one particular website which are very difficult to figure out what form to enter degrees minutes and seconds. Thus, as far as I'm concerned, the spreadsheets need improvement before they should be used (by us).
That aside- CelNav is a lot of fun, very interesting and gives you a sharper sense of navigational skills and a connection, in a certain way, with mariners throughout the ages. This, a GPS cannot do.