I just went through a go-koala on-boarding call today, and I'm cancelling. The Hub shows prices offered by renters, which are low enough that I can't come close to covering MF.
They have a feature to help you identify high-demand weeks and price them accordingly as an owner, but then you lose the whole guaranteed rental part of things so it's really not worth paying for. They also told me that Hilton listings are guaranteed (not), and lied to me about the price going up the next day to try to get me into a seven year commitment. Overall, really not impressed by go-koala.
Also, really not impressed by Hilton. We fell for two retail sales and both salespeople raved about how they rent their points every year to cover MF... something that's not allowed by Hilton! (And for the prices they want, they shouldn't be putting in any restrictions!) I'm getting that the timeshare industry is pretty much 99% scam. Such a disappointment (and financial loss, which adds a bitter taste to vacations). Hilton may have some nice resorts, but my experience buying a timeshare from them (HGVMax non-deeded points) leaves me thinking they're a sleazy unethical company. They're clearly making enough money off this scam to not care how much it hurts the perception of their brand.
This whole timeshare thing has proven to be a complete and utter rip-off. Wish we'd discovered TUG sooner... we were wide-eyed newbies who were ripe targets for predatory sales techniques. If we'd known we couldn't rent points to offset MF we wouldn't have purchased at all. As is, we'll try to have some nice vacations and track the value of those stays to convince ourselves we bought *some* value.