How many of us ride under water is a good question.
Snorkel pvc pipe a few elbows some glue or cement and a stack you guys in the woods and water will be set like a mud boggers. Lol in all seriousness though you guys are running big motor and holding them back with limiting the air you can get with air boxes let alone lids but wanting as much power as possible there has to be some give and take.
Yes I agree 100% there's give and take. There will always be more to be gained but for me I have plenty of power. From the one race I ran that there was a significant amount of water I could tell you every quad that had an open air box. Then there was me who could just blast through it without a second thought! So for me the trade off is a good thing. I can't be the only one who is glad they have a sealed air box
Could you post up a few pictures of what you're dealing with so we can throw some ideas at you?
I ride deep heavy woods, snow, rain, mud.. I avoid deep sitting water and I've never had a problem yet since I removed my air box!
I would suggest, using silicone hoses and connectors for a finished look. Its also pretty cheap. Same stuff we use for intercoolers, etc... Just pc together what you need from Aluminum pipe, (thin walled) and use silicone hose connectors when you need to make a bend. I use this stuff all the time. Works really well.https://siliconeintakes.com/Otherwise, I could 3D print something depending on that you're looking for. I did a snorkle airbox for an XC rider in the Upper Northwest. Huge water crossings, etc..