If 1 in 3 hunters are harvesting a deer and the buck to doe ratio is 1:4 then I don't see how the population is in decline. Last year I read an estimate of 50,000 WT in the 100 units in Washington and 200,000 WT in Region 1 of Idaho.
I do think it's easier to call in bucks when there is a ratio of 1:3 or better. In Idaho I believe the ratio to be far better because anterless is open dearing modern firearm. I think hunters take more does then bucks. In one instance we shot a doe only to find out there was a huge buck on her trail and he was pissed. It sounded like he was going to storm out of the woods and take us on until he regained his senses.