....
It'll be another couple months to go, but I imagine Dad and I will do some
experimenting with fuel consumption in the GB42, with both engines throttled
back & one enging at a time shut down (probably alternating every couple
hours). Any ideas of where to look for appropriate fuel flow meters for
these?

I think this is the unit that I saw in Tonga:
http://www.navman.com/Navman/Templat...____22129.aspx

-- Tom.