There's nothing wrong with using fem'd seeds to breed with. Just don't expect to get enough variation to move foreward much. A concept that took me years to understand is that reducing variation within a given line is not the same as increasing the frequency of similar traits. If your goal is simply to produce a reasonably open pollinated strain, feminizing can bring reduced variability without pushing down many generations.
mr. greengenes your comments have interested me and left me confused. probably because my lack of experience with breeding. go easy on me but can you explain a little more about the difference between reducing variation and increasing the frequency of similar traits? And what does "pushing down generations" translate to?
my take on your comment is that if I am breeding for two traits I am not necessarily reducing the variation of probable hetero/homo combinations by using a male and female. twice as much possibility for future generations?
If I am using femminine seed then my possibilities of narrowing down the traits becomes quicker without having to use as many M/F generations to achieve similar results. however, I have limited myself from the beginning by only have so many combinations to find for future generations and eventually all the recessives and/or "negative" traits, like lack of vigor or messed up mutants, will come quicker as well.
And to resolve this problem I would have to introduce a male.