What kind of person would take on a diver who has an expensive computer and then refuse to teach them how to use it.
I don't think anyone said they'd refuse. However, I personally would refuse to be constrained into a deco profile I was uncomfortable with.
Also, I'd be uncomfortable if an actual ascent proved to be different than what'd been planned in advance. If th is happened and, for instance, caused the team to blow their planned gas reserve, I'd consider it a failed dive... and require a repeat. Sucks if that's a computer caused issue...
Going back to Tec 40. Is that accelerated deco? If not, or if richer mixes are just for an extra safety factor, then any old computer, such as a Zoop, would do.
Well, that'd be an awesome tech course, wouldn't it?
Tec40 can be considered a gateway course into full tech. It's a disservice to students to treat it lesser.
Some divers may undertake Tec40 as an 'advanced recreational' course... and have zero intention of progressing into 'full' technical diving. However, if there's any possibility they'd consider progressing in tech, then doing Tec40 'on a Zoop' will leave them under-prepared for their next class.
Of course, the students would have to prepare a detailed deco and gas plan... and they'd have to match what their computer assigned them for ascent/deco. Not found a Zoop deco planning mode yet...
Have you dived this computer?
Have taught several students who used it, and have a few friends who bought it by mistake... Then sold it shortly thereafter (getting tech trained).