It is not very practical OR easy to do on an outboard but "precharging" the oil filter is recommended procedure for an oil change on MOST ENGINES.
What I mean is filling the filter with oil before putting it on. This works great and is easy on engines with a spin on filter that is mounted vertically. Not so on the Honda outboard. They mount them horizontally because of room constraints. BUT...on my new to me BFD 20, I do it anyway! I fill the new filter with fresh oil and set it aside so that the oil can "soak in" to the filter "media". I then empty the filter back into a clean, empty oil bottle and then screw it on the engine. Yes....this DOES make a mess and I clean it up.
The reason I do this is because, when the engine is first fired, my critical internally lubed surfaces will receive oil a little bit sooner than they would have if I had left the filter dry. The pump more easily fills the filter cavity and gets oil to the bearings in larger volume because I did the presoak of all the filtering porous elements . It's a small thing but it does prevent dry start after an oil change. And, if you LOVE your Honda like I do......
Just sayin'.
Like Mike says, put in a bit less oil than recommended. I fill to just above the ADD line. Then start, run and leak check. Shut down and wait AT LEAST 3 minutes and check the level again. Top off as necessary but leave the level a bit below the full mark. It's never a good idea to have your oil level above the full line.
From a guy that LOVES his Hondas!