What is your recommendation on using a scoop on the raw water thru hull vs. no scoop? My inclination is to not use a scoop. The reasoning being that it is easier to clean the thru hull opening. My yard says the scoop keeps debris out of the engine but I would think my Vetus raw water strainer would do a very good job of that and be much easier to keep clean.
I would opt for no scoop but if you do decide on a scoop, please fit is to that the opening faces towards the rear of the boat, not forward.
This subject is covered in the installation manual that is included with each engine. You can downloat a copy here www.betamarinenc.com/wp-content/uploads/2016/05/Engine_Installation_Guide.pdf