Hi Ron,
Ironic you brought that up.
Currently, I am building a new set of wings for the PA22. I am planning on installing VGs. At the moment, fabrication of the Stewart square wingtips are in process. These are not drooped but extend the full airfoil shape the entire span. There is a small increase in wing area but primarily gets rid of the round tapering wingtip. Also, the cover will be poly-fiber as it is light compared to dope. My current wings have a thick coat of two part Aerothane and consequently heavier than they need to be. The new lighter wings, extended tips and VGs should make this tug even better.