A poor swimmer with no swimming background whatsoever, I did the weekend TI camp 2 years ago and was thoroughly disappointed. Too many people per instructor, no "take home" materials/drills to reinforce the concepts. Net result, no measurable gain in speed/stroke count, still a poor swimmer.
Just recently, I started working with a coach @$40 per hour. Net result after just 2 sessions, reduced stroke count, better kick, faster.
Another very strong vote for individual coaching over TI.
"It is never too late to fix your childhood!" Tom Robbins
Dean Wilson
http://www.anaerobiczone.com Bicycle Protection Indoors & Out