"Does anyone have any suggestions for a durrable and adjustable UL trekking pole?"
I've been delighted with my GG LT4's after 4 years of use, on trail and off. I use them for everything you mention except the dog bit, and haven't had any breakage issues yet. They are a lot sturdier than they look. However, I weigh ~136-137#, and am careful with my plants. If you are careful, I don't think body weight should be an issue. If you are not, and like to bull your way thru the backcountry, they are probably not for you. Nor, for that matter, would any other truly UL hiking pole, by which I mean <10 oz. Downsides to LT4's: Occasional expander slippage; can be difficult to control in really high wind; pricey.