LOL!
I generally go with 2-1/2 lbs per gallon if I want it dry, 3 lbs if I want a little residual sweetness and 3-1/2 lbs per gallon if I am sure I want a sweet finish... although now that I'm learning how to treat my yeasties better, I may have to adjust that upwards as they are able to process things better when I'm nicer to them (things like aeration and energizer).
Well, in line with honey to water ratios and Sleepy_Friars future batches, here are some suggested guidelines:
Per the BJCP style guidelines for Mead:
Dry mead FG is <= 1.010
Semi-Sweet FG is 1.010 - 1.025
Sweet mead FG is 1.025 - 1.040+
Obviously, the strain of yeast will impact the FG, but for the sake of discussions, assuming a 14% ABV capable strain (that is well cared for, fed, etc.) and per the mead calculator, the following honey to water ratios for a finished mead at 1.000, 1.020 and 1.030 would nominally be as follows:
Dry = 3lbs of honey/gallon
Semi-Sweet = 3.5lbs/gallon
Sweet = 3.8+lbs/gallon
Again, using a yeast strain that has a lower alcohol tolerance as well as desireing to be at the lower or higher category limits will modulate these numbers, but this should provide a good starting point.
Eric