Need help with turkey vulture deterrents

[32drawlength]

I understand they are protected, so plinking them is out

The birds are hanging around a private lake boat dock that's covered & pooping everywhere. They have already damaged the boat cover & a seat.
Is there something to hang from the slip cover or some type of motion/wind device that would scare them off?

Open to suggestions....
Thx in advance

[Sunnylab]

Roman candles.

[MadHatter]

Tannerite. Let them all get settled in, and watch as the sky turns white, from the amount of grey matter they will be blowing out. It will look like jet propulsion .
I am advocating you scare the black hell out of them, not blow them, or your dock up. Maybe set a bottle of it on top of a post or close to where they are.

[txagyotebuster]

Make some heavy duty tack strips with finish nails and screw them or zip tie them down where they are landing/roosting

[Shinesintx]

They are protected, but I read where you can remove them.

[MLAH]

This might help you.

After listing in the search block a full page of like items turned up.

Bird effigy

Vulture effigies scare away birds at Savannah Mall

http://savannahnow.com/news-latest-news/2014-12-09/vulture-effigies-scare-away-birds-savannah-mall

Buy your own effigies. Keep the Vultures Away!

http://www.allaboutprops.com/sales/vulture-sales2.html

[32drawlength]

Make some heavy duty tack strips with finish nails and screw them or zip tie them down where they are landing/roosting

Good idea to try

What about some yard decorations that blow or move in the wind?

[AntlerCollector]

Get a sound cannon. Set it to go off a couple times in the evening when they are coming in to roost. They will find somewhere else to go