AWESOME!
Nice Job Wayne!
These things are so fun...and SIMPLE!
I would think a fin without rudder would be fine if your not into trying to get it to flat spin or serious aerobatics. I find rudder helpfull in vertical climbs to keep it tracking straight.
Great Job! It's a neat feeling when other people take a design and run with it!
Best of luck and congradts on the third Giant Delta with a pic here in the forum.
High Flights!
CrazyHerb