This shop is fine but nothing special. Good equipment, nice guides but I was highly adviced to join a dive to 'check my skills' (I am a DM) in a sjittty training site. During a boat trip they took 1 guide for 5 divers with different skill/ experience levels which is a bit cheap imo
To be fair to them being a DM (or even an instructor) generally says very little about actual diving ability. Its not uncommon to have a DM or higher with the buoyancy worse than a new OW diver. Most centres will with good reason insist on an easy dive first before allowing things like Blue Hole/Gabr/Thistlegorm and so on. What was the "****ty training site" though ?
Lighthouse reef maybe? In which case its one of the main normal dive sites but also has a confined area (so isn't actually that ****ty). Its a fringing reef with large coral pinnacles with depths ranging from 0m to 50m. Generally there youll see the usual reef fish along with octopus, unicorn fish, hawksbill turtles, lots of crocodile fish, *large* scorpion fish and so on. People actually request it. Yes training is done there - in the confined and the first 50m of it or so but that doesnt make it a "****ty training site"!
Mixed groups can sometimes cause problems but sometimes its not viable to pay 2 guides for 5 people and on lots of sites you really dont *need* depth. Part of the problem is that Dahab tends to be too "nanny'd" with diving - its all generally done as follow-the-leader group herding with very little or no responsibility given to individual buddy pairs. Its a shame and somewhat restrictive for customers that are actually decent divers.
Fish life - yes its getting noticeably poorer here than before. The out of control construction and other issues have done visible damage to the reef in the last 12 months and massive illegal overfishing (always a problem, now on a near industrial scale) by egyptian and mainly bedouin right on the main diving reef area is decimating it in places. They need to get law and order restored but i cant see that happening for several years.
As for the weather - yep its freezing. Getting mid february air and water temperatures (and wind) since early november. Its a VERY cold winter compared to previous years. Drysuits are great.