firstdive2005; You've hit the magic bullet. Once a diver is fairly comfortable in the water, the most important thing in increasing bottom time is to get good buoyancy and TRIM and SLOW DOWN. Scuba is not an endurance sport. It is a visual sport.
When one learns to hover whilst stationary and not have the lower extremities sink, then all his propulsive force is directed in moving you forward. The speed problem comes from trying to go forward with the breaks on and a lot of energy is needed to offset the poor trim.
The biggest problem is most instructors and dive shops need numbers to survive. It takes time to teach and practice the skill set to do it right. Time is money. Enough said...
Dale
When one learns to hover whilst stationary and not have the lower extremities sink, then all his propulsive force is directed in moving you forward. The speed problem comes from trying to go forward with the breaks on and a lot of energy is needed to offset the poor trim.
The biggest problem is most instructors and dive shops need numbers to survive. It takes time to teach and practice the skill set to do it right. Time is money. Enough said...
Dale