When doing flat DB presses I use my knees to flick them up as I drop back, and when I'm done I kinda guide them down as they fall. If you're at the gym you should be able to drop those fuckers right on the floor when done. Only once has one dropped on my chest by accident due to fatigue. I usually end my chest workout with DB presses, my gym only has up to 125lb dumbbells. Incline isn't much different, you can still use your knees to gain momentum and fling them up.