Boondoggle,

Your Standard Weight chart fits the function:

SW = .0003488*Length^3.163

Assuming your length column is "B" the following formula in the second cell of the RW Average Column it would compute the SW so you wouldn't have to reference the chart and hand enter the standard weight each time.

=.0003488 * B2^3.163

The RWFish appears to compute from a formula in excel so you would be good to go..

It isn't what we don't know that gives us trouble, it's what we know that ain't so - Will Rogers