feihu,

Thank you for the example. I too used to use the trial and error fingertip method. It works, but is not as accurate. Once an existing CG is known, any calculation and/or possibilities can easily be determined. An accurate CG makes a difference in proper glide ratios, etc. I don't have a problem with the trial and error for those that wish to use it. However, I like knowing exactly where to put all my equipment and mount it one time with the least amount of ballast. Hopefully, this thread will share a little knowledge and options for others. Thanks again for your input.

Jim