I appreciate your letter so much. We cannot make medical claims and can only rely on people like you, to prove how important using the Kegelmaster can be.
It is great that you are spending 10 - 15 minutes a day on your workout. I wouldn't increase it at all. In fact you can use it for 5 minutes a day and achieve results. The important thing to remember is that after a workout, a muscle needs time to "rest, recover, and grow" - to meet the next challenge!
Those "quick" contractions you are doing are excellent, because they address a different set of muscle fibers. Additionally, they are excellent for increased endurance and pelvic vascularity (the flushing out of toxins and infusion of the entire pelvic area with new germ-killing white blood cells). Just make sure you are ONLY using your PC muscle when you do those "quick flicks". (The "Second Device" can be a Godsend, here!)
Keep up the great work with the Kegelmaster!
Thanks for writing the forum!
With warm regards,