Notice that the jet tube is under water in this pic. Travis I'm not picking on this boat it's just the first image of a jet resting on the water that I could find. I know the hull material is what this boat's claim to fame is. If it does all they say it'll be a bad boy for sure and the only other river boat I'd even consider if I were to buy again.

Notice the tube is high and dry in this pic. The foot is neatly tucked into the tunnel where it gets a nice stream of clean bubble free water feeding it. The boats bottom is only a couple inches below that. That's Big Pine Key BTW. We took on Bahia Honda bridge pass, the ampitheater, and the back country, in the Suprme for six days straight. Never ran a boat in the salt in my life... I'd do again in a heartbeat but I'd get a platform installed first.

A vew of where the actual bottom is vs the tube. Pre Linex.

The point in this design at leaset best I can tell is to keep the heavy end of the boat and the jet foot protected. Most of the marks on my boat are in a 12' section in the middle and spread the width. This makes it much harder to hit the same spot twice in very shallow water. It also dampens the hit because there are no hard angles there. If you look under my boat the marks on the linex stop about 3' from the rear. In other rigs where the extreme rear is the lowest point you'll find that you'll hit that same small area (usually where the transom turns up) most of the time. This is where you'll eventually wear a hole or tear off a jet foot.
Steve hoping we get out alive. This was tame compared to the tide changes we fished. I wasn't brave enough to remove my hands from the motor long enough to snap a pic.

Fished too long and let the water fall out on me. I've done this more times then I care to admit. No problem just shove it back in and go to the next spot.

Feeling hungry??? No problem. Plenty of room for a grill. Or maybe a square dance??

No these aren't Brown Trout...
