Old thread, but still worth it for Thistlegorm pointers. Mine:
-- Don't know how it is now with the new mooring system, but the number of divers at any one time - or rather dive groups - can be tremendous. Sounds stupid, but make sure you know who-all is in your group (what their fins look like!!
). Particularly if another buddy team in your group, like, accidentally cuts ahead of you. In that throng, there's a lot of potential of accidentally going off behind another group. Ask me how I know.
(Quickly remedied, fortunately.)
-- Be sure to study all the available diagrams of the wreck, and where all the artifacts are. Otherwise you may blow past something important. I didn't even see the Bren carriers, though that was one of the main things I wanted to see.
-- The routes and timing are pretty well organized by the divemasters we were with (Sinai Divers). We went deepest (locomotive off the port side) at the beginning of the first dive; then the second dive was spent exploring in and out of the superstructure. We then hung out near the ascent line, and ascended by buddy teams as we hit our ascent pressure (don't remember what that was). I was on EAN32, but my son was on air; enough bottom time for two dives on the Thistlegorm.
The only small problem was that the dive op offered an extra dive (marginal extra charge) on the way back to Sharm, on Ras Mohamed. They wouldn't allow the two of us to do it because my son had dived air. (He was still OK NDL-wise; but, hey, it was their boat. Plus we had to drive back to Dahab that evening across some elevation.)
--Marek