The central mirror needs to be rather high up to be useful, but I figure that if I can row and look backwards while sliding back and forth, I can propably do with a single mirror on the steering side.
My side mirror will be convex, btw.
In the photo Aeroman shows exemplary (looks comfy!) low centre of gravity with left shoulder below rear "cockpit edge" so an ACE-style mirror would give at least some assistance, but if you want to see over the roll hops then you probably need a periscope...
