manni-yunk
Contributor
Some of the equipment configurations are pretty dated and exemplify the height of the "wear it all" era. People tend to be a lot more minimalist now with much cleaner configurations that will slow them down less in a current and not get them hung up in a wreck.
IIRC,he has some good discussion about mixes and optimum deco mixes for dives in the 150 ft for 30 minute range, that provides a pretty good idea into the pros and cons of getting on a leaner mix earlier verses a richer mix later versus just using back gas and O2. There's more to it than what discussed there, but it illustrates how everything interacts.
Kind of- if you read it again - he talks about eliminating "danglies" and staying streamlined. - One of the issues with the pics is that it was written when a decent light weighed 20 lbs!!!!!! And - no real wreck reel existed so people still used GIANT jersey reels (some people still do), vs the streamlined versions today.
A lot of the info the OP needs is in there. Anchor tie in, untie, navigation, and overall techniques for wreck diving.
If you look at a cave diver configuration and a typical NE wreck diver - we are still a mess compared to them. Lets face it - there is no real way to carry a catch/goodie bag, tool bag, crow bar, 6 lb hammer, 2 lights, 2 reels, etc....and still be "streamlined".