Have you tried wrapping em in a bin liner Stu and then duct taping up to thee thigh 

Knowing you , you will need em tall enough to make sure that you can get some good deep holes in the middle of watery sections.

(this is the sensible one )

Mark

Got sum big fishing waders fer that job Mark,

just waitin to see yer entry and I will av em on!

Trying to keep my alpine stars that lovely white colour, had an idea of painting them,

Cooking Oil? Paint? HRC, you need Cuprinol. Does what it says on t'tin