First off there are so many divers who just haven't gotten around to trying to tune their diving. They think what they have works but they aren't always asking very much out of it.
I had a bunch of different bc's before I tried a bp/wing. I got by but there were aspects that I just barely got by with. We continued to advance our diving and training and it became increasingly harder to make a non bp/wing work the way we wanted. One of our instructors asked if we had ever tried a bp. I sluffed it off and tried a different Zeagle...then another. I was a Zeagle guy. Every so often he's mention it again. He wasn't pushy but it was clear that he didn't think what we were using was really working out as well as it could. Finally I broke down and tried a bp and never went back. I owned a shop for a while and taught for shops before that. I could have and did dive anything I wanted and a bp/wing is what I settled on.
I'm not just talking about technical diving either. A bp with a little single tank wing is, to me, simply the cleanest, most streamline, comfortable thing you can get your hands on. Id have to be faced with a really great...just can't pass it up dive and none of my normal equipment around to even be willing to get in the water with anything else. It's like going from a Yugo to a Rolls. It doesn't matter what kind of pockets, weight systems, colors or other goofy gimicks they add to try to get you to buy a new bc every year a simple bp and wing gets my vote.
the other reason of course that you don't see more are because there are so many dive shops that have dealerships with companies that demand such huge anual minimums that they can't afford to dive or sell anything else. And of course they were brought up in the same system and may never have had the chance to try a bp/wing themselves. You don't know what you don't know even if you are an instructor or own a dive shop.
I had a bunch of different bc's before I tried a bp/wing. I got by but there were aspects that I just barely got by with. We continued to advance our diving and training and it became increasingly harder to make a non bp/wing work the way we wanted. One of our instructors asked if we had ever tried a bp. I sluffed it off and tried a different Zeagle...then another. I was a Zeagle guy. Every so often he's mention it again. He wasn't pushy but it was clear that he didn't think what we were using was really working out as well as it could. Finally I broke down and tried a bp and never went back. I owned a shop for a while and taught for shops before that. I could have and did dive anything I wanted and a bp/wing is what I settled on.
I'm not just talking about technical diving either. A bp with a little single tank wing is, to me, simply the cleanest, most streamline, comfortable thing you can get your hands on. Id have to be faced with a really great...just can't pass it up dive and none of my normal equipment around to even be willing to get in the water with anything else. It's like going from a Yugo to a Rolls. It doesn't matter what kind of pockets, weight systems, colors or other goofy gimicks they add to try to get you to buy a new bc every year a simple bp and wing gets my vote.
the other reason of course that you don't see more are because there are so many dive shops that have dealerships with companies that demand such huge anual minimums that they can't afford to dive or sell anything else. And of course they were brought up in the same system and may never have had the chance to try a bp/wing themselves. You don't know what you don't know even if you are an instructor or own a dive shop.