100 knots is too slow for any maneuvering. The only time you want to be at 100 knots (give or take, depending on landing weight) is past the threshold in a very light airplane, coming back to your landing speed. In the POH (page 318), it’s listed as “target threshold speed.” There’s a table by weight and flap setting.
On final, you want to be at an approach speed well above that, about 135 knots, or faster if you’re heavy. For definitive numbers, see the placard on the upper overhead and adjust for your landing weight. Your numbers are approach speed (Vapp), then Vref (the speed over the threshold at 50 feet AGL), and finally touchdown speed.
Good discussion in this post (and actually in the whole thread):
And… one of the best aviation videos ever, about airpseed control and safety. Got a lot of attention, including a writeup in Flying. Dan Grider is now giving seminars about it - there’s one on YouTube - but this is the place to start.
