What is the best way to "deal" on a DG hunt??

Is daily rate plus trophy fees the best way to shop a DG hunt if a quality professional hunter is found?

Should you hunt with the same PH before pursuing any "end of season" deals with left over quota? Or is it far better to hunt the prime season times at the regular rate?

How does one choose a DG hunt with an assurance of plentiful game?

Thanks for any thoughts on these matters.