As long as you are not in the middle of some other discussion and its a proper question feel free to post them on the the chat room. Don't over do it ofc, no flooding of information will you get any attention, but I see no reason why not.
Adding a bounty to the posts is probably the best option (premium spot for 7 days ftw) but also editing and fixing small issues with them will shoot the post straight to the top of the active question list and give them a bit more visibility.