I cannot give away the High Sierra property. I have tried.
On the other hand, your Hyatt Sierra is worthless. Nobody's going to pay $1700 maintenance fees for an off off offseason timeshare in a non-expensive area. As you've already discovered, you can't even give it away.
I have used my points for summer weeks at the Marriot in Stateline in the heart of Heavenly Village.I've seen Bronze weeks at giveaway prices. That means one 2bd; or 1 1bd and one studio; or 3 studios a year. This is how I used my week every year until it was bumped up to gold.