Snorkel Sock/Unifilter

[geoffayres]

.......There are longneck styles also avail up to a 3" dia snorkle that work the same but have a much larger area to pre-filter, so these might give a better result. I was chasing a long sock for 4" snorkle but they dont make them.

I use the Nissan version of UniFilter Droopy's in my Fatz 4" snorkel.
Easy enough to make an adaptor out of plumbing fittings.
Can get a floor waste that is a neat fit in a Fatz 4" snorkel.