I know what you mean, but I don't think there is a way to filter the the content read while hopping hubs. I enjoy hopping hubs, but I don't have a personal interest in every hub that comes across my path. There is hardly a topic that I won't read, but part of our job as a hub hopper is to flag inappropriate hubs. So, if it is something inappropriate in your judgement, then alert the HubPages team by flagging it and let them make the final decision.
When I'm hopping, if a hub title doesn't grab my interest, I just don't read it. I skip to the next one. But, that doesn't solve your problem of download issues. Hmmm, I wish I could think of a solution for that. Maybe a filtering process is a feature that could be suggested to the staff. It couldn't hurt.