BUMFOH and PUF in my opinion are the 2 best "any piston aircraft" checks a pilok could have with obvious additions depending on a/c type.
I always have little home made clipboard with notes added when required to the BUMFOH and PUF checks, however regardless if in a fixed gear vs retrac, or csu vs the one that doesn't make the cool sounds, or single vs twin, that the basics are the same and would recommend sticking to the ones that make sense and work for the individual as long as they're stuck to and done every time ones in command of an aircraft as long as the same outcome is achieved and operating requirements met.
I also like the Green Goblins remarks as all those scenarios have come up over the years and the 2 little checks have saved me from buying multiple beers at the bar!