I used the 76 project computer mount with mine and it worked great.

I was wondering the same and came here before ordering them. I think the only round zone would be at the beginning of the extensions

You use the 76 project mount I mentioned before and attach it at the base of the round handgrips. Angle the computer towards you. Your hands hide the computer from the wind and the computer is right in front of your field of view. It works great.

Yep, I guess that's the way. It's just that I don't like the GPS up there despite being surely more aero efficient.

When climbing or navigating through the map I find it very far.

Thanks for the reply

I use the 76 project mount as well and even with probably it not being intended, I did put it in the non-round area and it works quite well for me.
Didn´t have a problem with it moving or getting loose.