Gymble....
Nice troll....but certainly not a bait many would fall for. On the one hand you seem to endorse working a co-pilot for "free" and that they are a "dime a dozen"....but also suggest you have an investment in a pilot's training.
I wonder when you consider the "dime a dozen" "work for free" pilot to become a valuable asset worth investment in....and worthy of retention?
How do you make that determination? Wave a wand...peer at tea leaves....or require some sort of sexual act from the aspiring pilot?