One added thing I'll say about homebrew, your insurance won't likely cover
it if something goes wrong.

Dang... that's a good point. In this litigation happy society, if
ANYTHING went wrong, no matter how little the homebrew design
mattered, they'd claim it was my fault. Hrm. So, buying a weaker off-
the-shelf attachment could shield one from liability. Ugh. That
almost makes me consider giving up on the idea, even though I think it
could be better.