Yes, I took the SDI solo course a few years ago with my TDI cave instructor. He made the course wholly worthwhile. I had already had significant solo diving experience as both a solo SCUBA diver and freediver, but he trained me to approach technical diving as a solo diver. The course was very challenging due to the environment in which we trained. I strongly believed that any solo program should be used as a "safety course" for any diver at any level from the recreational diver to the cave rebreather diver in order to provide maximum learning and maximum challenge at a diver's highest level. As a PDIC ITE and former technical training director for PDIC, I created a solo program for PDIC in which the standards allowed for solo diving to be taught at any and all levels. Emphasis is placed upon gas management, dive planning, problem resolution, wilderness first aid and survival, dealing with equipment failures, decompression tables, ratio deco, battlefield math, omitted deco, self-treatment of diving injuries, and challenged to survive Kobayashi Maru situations by being challenged to think outside the box. Skills such as tank valve breathing and removing, repairing and replacing equipment while maintaining trim, buoyancy and planned ascent schedules are a couple of the physical challenges divers face while time pressure, thinking under stress and increasing number of failures test a diver psychologically.
For solo classes the value of a course is very much dependent upon the skill and knowledge of the instructor. For example, a cave diver who wanted a solo card might not get much from a typical SDI recreational instructor who teaches solo. Yet, if that diver sought an SDI/TDI cave, wreck penetration or trimix instructor he may be much happier with the information. The same applies to PDIC solo training. If you are going to throw hard earned money at an instructor for the course or the card, take the time to travel to a top pro who might be worth every penny.
For solo classes the value of a course is very much dependent upon the skill and knowledge of the instructor. For example, a cave diver who wanted a solo card might not get much from a typical SDI recreational instructor who teaches solo. Yet, if that diver sought an SDI/TDI cave, wreck penetration or trimix instructor he may be much happier with the information. The same applies to PDIC solo training. If you are going to throw hard earned money at an instructor for the course or the card, take the time to travel to a top pro who might be worth every penny.