Greg

100mm in front of the tube (not Centre line) is a good starting point.

The gear is positioned to give the best take-off rotation ( a problem with the old Roo )

With fuel and the canopy on it will be fine.

Keep the up in after take-off untill the speed builds as the high turbine makes it want to tuck until some speed is reached at high power settings.

Dave Wilshere
UK