Checking the gear has to be instinctive, and actually happen. It's configuration assurance, and it is a vital pilot skill and discipline.
Flying amphibians is very good training for making sure your gear is selected correctly for every landing.
I flew amphibians for almost sixty years and my go home safe card was on every approach I always asked myself " Where am I landing....and ...where is my gear. " turning final......even when flying the Turbo Commander that was my check on every landing.
So far I have never made a mistake.....but did find the gear in the wrong position twice by doing my turning final check.
Good post Pilot Dar!!!!