Been hunting long ranging for ten years. I hunt with guys that have been doing it since the late 60's. That being said, it's not for everyone. First, if you don't want to spend a lot of money (optics,custom rifles,rangefinders and so on and so forth) pick a different hobby. Second, I prefer a lot of spotters. Two or three that know what they are looking for really makes a difference. As far as distance, that's a personal call, it depends on where your comfortable. If it's windy, it's less. As far as ethics go, if you have a good spotter and follow up on wounded game, your no different than anybody else. I know people that shoot rather well and have wounded deer at 100 yds. If your ethical, you follow wounded animals until all hope is exhausted or you or someone else gets the animal. Unethical hunters shoot and if the game doesn't drop instantly they go and find another one to shoot. Just my two cents.