-
I'd expect the pads might get a bit whippy - I've seen some people make braces up between pads.
Depends how tall your stacks are and how you ride. I pull on the tribars quite hard climbing on 100" fixed, and my 60mm 3T stacks are fine. TriRig suggest putting a bridge across (their BTA bottle mount) for spacer stacks over 35mm. Fibrelyte make Pro Missile stacks up to 100mm, but they make a cross brace too, so I'm guessing people using the really tall stacks have felt the need to join the two sides.
I usually use the 3T bridge in front of my Garmin mount, as the first generation Ventus has a tendency to rotate the extensions about the vertical axis, but I've ridden without it and not had any trouble.
What's better handling about them? Lower when cornering? I'd expect the pads might get a bit whippy - I've seen some people make braces up between pads.