I originally started solo hunting because I couldn't find anyone who wanted to pack in with me, and I was going regardless. I usually limit myself to about 5 miles in and as far from any trail as I can get. Don't see nearly as many people that way, but I see a lot more elk, take a lot more pictures, and I know a lot more about how to bone out and process a critter than I knew before. The longest I have every been in is 2.5 weeks, and I have packed out three elk by myself. You don't have to worry about gaining any weight. I actually work at trying not to lose any. Did have one bad knife incident the first time, but I am much better prepared for such things now. Came close to being trampled by elk at night a few times, and it is not unusual for them to keep you awake at night bugling next to your tent. One year I had a herd of 13 elk bed down next to my tent the night before season opened. I have heard that backpacking in to hunt like I do is called extreme hunting. Whatever the label I would say the way to get better is to keep doing it. !!!WARNING!!! Solo hunting can become addictive.