This is the way BOB at Teague does it.
But would he recommend 150 deg 50 wt oil to the filter ? Probably not. If you want to do it that way, move your oil temp sender to the pan and restrict water to the cooler till you achiever proper oil temps in the pan.
I disagree you want the oil going thru the filter last before the motor. So the filter can do its job.
if you go into the filter first and then the cooler if the cooler come apart for any reason the debris goes into the motor.
You dont want to no the temp in the pan its crazy hot i take readings right before the oil goes back to the block so you no the oil temp hitting the bearings
On the very rare accession that GT and I actually agree on something, you should pay attention. And oil cooling/filtering is one of the areas we usually agree. Standard style pleated filters will not filter 150 deg 50 wt oil at any useful volume. It will fold the pleats, crush the filter material, or open the bypass. Changing to a good filter (no Fram) might help a bit, but even the Wix racing filters I gave you numbers for wont filter that oil at that temp in a useful volume, the bypass will open.
And Yes, I do want to know the oil temp in the pan. Because that tells me how hot that oil has gotten going through the engine. Has it gotten hot enough to come up to temp ? Has it been overheated going through the engine ? You have no idea. I don't really care what the oil temp going into the engine is (within reason), whats important is how hot that oil is getting, you need you know its highest temp not its lowest temp. Would you look at water temp going to an engine ? No, you look at how hot the engine is heating it.
But its your boat and your engine.
GT, I really doubt he has 250 deg oil in the pan, at least I hope not. Can you imagine what must be going on in that engine if he can heat the oil from 150 deg going into it, to 250 deg by the time it reaches the pan ? My guess would be right around 200 in the pan if hes using cold water to the cooler. But that's just a guess.