x2 water leak??

I have a 89 x2 that runs great and is a lot of fun but after 30 min of riding it has about 3-4 inches of water inside. i have no outside damage at all
 
Have you tested it on the trailer running with hood off ? Or rode it with the hood off ? I would eliminate leaking water lines as the first possibility... It also probably has a single lip hood seal they don't seal at all especially when old.

If everything is tight I can't see a bad through hull bearing putting 3 inches of water in a x2 in 30 minutes of "ride time" with a working syphon bilge "is it working?" unless the through hull bearing is totally compromised and the seals are totally non existent.

There is 4 seals in the through hull 2 single lip and 2 double lip. And a bearing.
 
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