Hello,
well if I can remember well when I used to do flippa a lot, I used to list my website featured just before the end of the auction (so it looks Hot) but when it have some bids (so it means it's popular) and somewhere in the next 48h to 24h before I end I would list it on Featured page and then it will get on Most active (because of bids) and it will get on "Ending soon" because it's ending soon right on time and you will get most of your listing...
It always depended on HOW LONG it will stick to the featured page (back then I used to calculate that) so that you can get really most out of it...