It seems all responses are similar and reasonable given the experience levels indicated by number of dives in profiles. One may be living in a more perfect world than the rest. Shops usually don't have the luxury of putting every level of experience on a different boat to a different location. If you've ever tried keeping a group of photographers together, looks like herding cats. I also like it when they keep moving slowly after pointing something out, this tends to keep things in that area from getting too damaged by the people that are too focused on the photo or looking at something and end up crawling all over everything. At any time during the dive the guide should be able to point you back to the boat. That doesn't mean take you back 20 minutes into the dive. The expectation that the guide will be able to find you a frogfish a great hammerhead or whatever you think is interesting is totally unreasonable. I've been on dives were I've seen all kinds of cool stuff and back on the boat someone is bad mouthing the location because they didn't see whatever they thought they should have seen. They have no control over wild animals, current, waves, how much the boat rocks, how sunny, cloudy or windy it may be. It looks like with experience comes reasonable expectations.