Perhaps folks are (justifiably?) skeptical about a sailplane that
hasn't even been built yet, let alone flown.

With photos of an actual aircraft and real performance measurements,
you'll find it easier to find a publisher.

.....and what sort of name is Duck Hawk? I wonder how many folks, let
alone Americans, know that this is one historical local name for the
Peregrine Falcon. Naming is a very important marketing tool. A
product's name conveys an image of the product or brand. If you have
to explain what the name means, you've already lost. At least they
could have called it Bullet Hawk - at least that sounds fast!

Mike