If a person was going to snorkel for deep mud and water crossings, yeah pretty much everything listed above would have to be considered. My snorkel is simply to bring cooler, fresh air into the air box. Where we run is very dusty, especially if you aren't in the lead position, so I needed a way to keep the so much dust from getting to the box and clogging the filter.

[2015 Z Force 800 53/Trail EPS]

Might want to consider putting another UniFilter at the top instead. Easy enough to do.

Heard of some people using these to filter out dust for their RZRs.
Maybe you guys can make more sense of it than I can.
http://www.cumminsfiltration.com/sites/default/files/pdf_archive/pdfs/product_lit/americas_brochures/LT32599_05_optiair.pdf

[2015 Z Force 800 53/Trail EPS]

Hell, that's not bad. Not that large either. Just need to get the right size.

Now if you want to get fancy I been keeping my eyes out on this but it's a little pricey basically does what nmkawi's mod does!

[2015 Z Force 800 53/Trail EPS]

Yeah but that's high-dollar stuff man...