My dash is at a weird angle which makes it hard to see tach from seated/driving position.
I trim until rpm's hit about 5500 then check gps for speed and trim in or out till max speed is reached.
Takes three hands to do it ...LOL
I've got a water pressure gauge, just have to mount it ...
Also have a bulge pump, just have to mount it ...
But first have to check on grease stains on right inner wheel of trailer ... Bad seal ?
Always something with old boats ...