setting ignition curves without dyno

[Rick]

Bruce Plecan wrote:
>Dynos are great for getting the cam events right. Well more prescisely they
>are great for doing everything but timing, and final mixtures.  They are
>worth every penny for doing anything other then
>timing, and final mixtures.  So if your buying dyno time for doing just
>those two items, you're not getting your money's worth in MHO...
 
Why do you say this?? what is the BEST way in your opinion to get the right
timing down and final mixture??

Rick