I used my HH bottom entry for 2 years stock. Then moved to whoopies. It was headed to 2qzq, until I drank the Warbonnet Coolaid, never really as happy with the lay of the BB compared to my HH Explorer Deluxe. Regret selling my HH. Only reason for getting a zipper mod for me was lounging around and UQ adjustments. Would leave the bottom entry in place and use it most of the time unless lounging or doing camp chores.