huge DIY wind proof yard sign design ~3 foot x 2 foot (scales larger)

I spent hours tossing ideas around, trying to come up with
a sturdy, easy to build very large political yard sign. This is
not spam -- I worked hard canvassing for Burke in WI. I'm trying
to share the results with you, because, I think this approach
worked well. Constructive criticism, better design ideas welcomed!

Disclaimer/this is not spam:

> I do not understand why my 1st version of this post was banned.
> I have a few links that may appear to be promoting a particular
> product, but I have no affiliation with them product websites. I
> also removed several photos of the sign, thinking that the sign
> content might have been considered political incorrect (was it?).

Continuing w/post:

Relatively cheap; durable, storm and wind resistant; waterproof.
Should scale to at least 4 foot x 3 foot. Sign itself is on 1/4"
plywood, and is only attached along it's top edge so it's free to
swing in the wind.

Sign example photos

T-posts provide the strong support and adjustable height- compensates
for hills, sign can be level w/posts at uneven height.

Full plan/howto here