Given the wind out here, since everyone is suggesting a bear spray, if the main concern is 2 legged threats I would consider pepper spray GEL. Otherwise, something easy to palm like a smaller bottle of Fox Labs' stuff. Especially the stream version. https://foxlabs.com/products/one-point-four-1

My concern with a knife only is it provides no standoff. I'd rather leave some creep puking in the dirt from 10' than have to close with the threat to blade length. And, if it gets to that the knife is a backup weapon. But I think it would be better to not let it get to that if possible.