HAVE seen folks spend a lot of $$ on shields. it's easy to do.
it's very easy to buy the WRONG shield, and then you wind up buying a second one.
First, get the height right.
when you are sitting on the seat, in your NORMAL riding position, the top of the shield should be about level with the tip of your nose. Maybe an inch higher. this usually works out to be pretty good.
NEXT, don't do what I did - and buy a narrow shield. They look COOL on your bike, but they are a slice of h*ll in crosswinds. So get a wider shield.
Finally, get something that's pretty tough, and hopefully has some metal around the edges of (most) of the shield. It won't look do d*mn Cool, but it will be a lot more stable that pretty-lookin' pieces of plastic.
AND don't get frustrated if your first shield doesn't work out. that happens to a lot of people!!
Shields make a big difference in long-distance riding.
Here's a pic of my 2012 WG with the tall Harley detachable shield.
I am tall from the waist up do the shield only comes up to my chin. I get a lot of head buffeting when I hit 70 mph. I took it off one day and jumped up on the freeway to see if I would like it. Went back home and put it right back on.
That's what I've been told as well, the top of the shield
should be level with your chin/nose area.
My bike had a Windvest brand of windshield on it when I bought it and
it's very well made. I think it's made of polycarbonate. What I
especially like about it, the shield itself is made of thick material. It
doesn't require any brackets up the sides. The main mounting bracket is made of
billet aluminum, show-quality chrome plated, and uses two
clamps that mount to the handlebar, one on each side of the factory
handlebar mounts. It attaches easily and can be installed or removed
in a few minutes. It really takes the wind pressure of my chest when
on the highway and is also very stable, even in windy conditions.