geo wrote...

Do they burn 6.5gph?

A floatplane with an O320 (the GG engine, according to the website)
will have the same fuel consumption as a Glass Goose with an O320
at the same % power setting.

I think the total cost of ownership with the GG would be
a lot lower.

How many are flying? How much to build and equip?

Dave 'carpe data' Hyde