Wet exhaust ??

I have a question about wet exhaust installation.
My generator has a water cooled "pot" in the engine compartment. The thruhull outlet is above water line, the hose rises up higher than the pot's fitting, by maybe 8".
I notice that water is expelled in spurts. I'm assuming the water builds up at the bottom of the pot until the exhaust gas pressure builds to push it out, then a bit of free exhaust, until the water builds again.
I need to "hump" the hose. Raise it fairly high to clear a new battery box, then back down to the thruhull.. There is already plenty of hose to do this. I'm wondering if there is a back pressure issue if I raise the hose higher than it is now? The pooling would triple in the pot, but still be below the inlet fitting. If need be, I can also raise the whole pot up off the hull.
Thanks, Ted.

 

how long is the run of the hose
and wot type motor, may yacht have very long exhaust, often the long run hold mush water and you are correct on the spurting and pressure issue, draw it please so we can see if you will have floodback issue , sound like a powerboat?

 

The engine is a Westerbeke 3cyl. diesel.
From the engine to the silencer the hose drops 12" in a length of30"
From the pot up to thruhull is a rise of 8" in a length of 8', some of this is excess hose.
I need the hose to rise 24", (16" more) then fall a length of 6', down to the thruhull..