Dear ManhattanGMAT,
I've been taking your class for a couple months now and have been incredibly impressed by the quality of the entire experience. However, your strategic speed guessing lab certainly needs work. Many of the steps suggested seem to take either too much work for guessing or too little. There seems to be little consistency in the work you go through to guess appropriately. I consider myself a good guesser already, and the lab did little to improve my skills.
Just wanted to provide some constructive criticism. Hopefully your program will continue to build on itself to be truly excellent for years down the line.