OK - rebel speaking here.
Caching not allowed? So what? You want to position your cache where only you can find it again. Properly done, your only concerns come from local wildlife. That's what OP sacks are for...........use them; they're cheap insurance. A pox on the cache police and the horses they rode in on!
Remember to pack out whatever container you use for your cache. Failure to do so only encourages the cache police to issue tighter regulations for those who follow you. I don't want the extra bulk and weight of another bear canister, paint bucket, or whatever in my pack. For that reason, I use only OP sacks for my cache. They weigh almost nothing, and I or someone else can always use another trash bag or waterproof cover for something. Worst case scenario - I carry 2 extra ounces (that takes up virtually no space) for another 5 days - a fair price for the resupply.
I've buried a few off- or near-trail caches with none of them ever disturbed by man or beast. Buried one so well even I almost never found it (lesson learned). Be sure you make excellent notes, photos, GPS reading, compass bearing and distance whatever. Just because you piled two big branches on top of or against a fallen tree next to the cache does not mean they'll still be there when you return.
I never tried a hanging cache but I suspect that would require a spot quite some distance from an easily recognized on-trail reference point. You don't want it to draw the eye of passing hiker trash or rangers.
Metabolism has blessed me with a rather adequate cache of adipose tissue about my middle. When all else fails, I can run for several days on that, which does improve my appearance temporarily. Unfortunately, once back to the land of beer and pizza (aka civilization), that same metabolism unrelentingly seeks to refill said cache in anticipation of my next adventure. Go figure.