Wingtanks on a Zipper? (104 for you noncognoscenti) Okay for long
crosscountrys but the bird is really a 'Zipper' with naked tips - also
pulls yards of streamers in the pattern, too. Of course, it'll pull
about half a G more with Winders aboard - less tip loss but for an
extreme look - leave the wingtips naked. BTW the USN had some ugly
birds (F6U, F12C, F13C, very first FJ1) but the Brits and French beat
them all hollow for uglies.
Walt BJ