I originally avoided this.... (after arguing about "accessible" behind a stove)
If it were an obvious access panel... Yeah! But floor boards, no... You'd never find it, if you were not the guy who installed it. And, in a floor, are you going to be responcable for someone putting a foot in it? Say the 400lbs woman standing on one high heeled shoe. Looks like a fine tailored (out-of-style)law-suit....
Mark Heller "Well - I oughta....." -Jackie Gleason