ktkt
Contributor
holoclines and underdogs were one of my key issues when I was a DM.
Haloclines I get, but what's an underdog in diving?
-----------
And, on topic... I think many newer divers use diving with a DM to jump into more challenging dives than they are really ready for, way past the level they would be comfortable with on their own.
I know I was guilty of this on my first tropical trip. Granted, as luck had it, I usually had both a divemaster candidate as my buddy and an instructor as my guide, and my buoyancy was good, and I was comfortable in the water, and I'd had the experience of calmly dealing with a few minor issues on previous quarry dives. But on that trip, I did dives much deeper than I'd have planned on my own. I wasn't trained in deploying an SMB from depth (though I did have one I could inflate at the surface). I didn't realize that our hot drops and pickups (no anchoring were in a sense more advanced than dropping down a line and coming back up it. I didn't have the bandwidth to pay attention to navigation at all.
It all turned out fine, but I did a lot of reading after that trip, as I realized that as much fun as I had, I'd have been way better off doing another 10-20 or however many more conservative dives that I (along with my buddy) completely controlled.
Too often people get caught up in picking an exciting sounding place with little regard for the skill and experience required to do it right/safely. I haven't made it to Cozumel yet, but from various reports, I am glad I didn't start out there after OW. There are plenty of spots where you can get out and do nice conservative dives with easy navigation (e.g., out and back along a wall is fairly hard to screw up) and still see tons of cool wildlife. Why not start there?