A boat going at a fast rate of speed would be kind of loud and might draw attention late at night wouldn't it ? Or are the houses a good distance from the lake?
#1...close enough but most have good views of water however at night, high speed, it happens, crazy IMO tho , lol, but b y the time you went to see they'd be gone and at night with only navigation lights and darkness, can't identify anything anyway
#2...there would be no real hurry IMO at night, other than just happenstance that someone see anything, right place, irght time, Im telling you, you just assume they're fishing and most are lol
#3... Im thinking more on the lines of a trolling motor, not sure what kind of boat, but quiet in and out, sleeping neighbors dont know a thing, scaring my self here thinking about it.....but personally I would pay more attention to a slow quiet boat than a loud fast one as far as suspicion goes but if neighbors are sleeeping.............
#4...We aren't sure if it was fri night him getting ready for bed and she awake working the puzzle or about to get ready for bed adn they hear a noise? OR if it was saturday morning, he just rising adn she up and dressed.......SS mentioned it appeared as if rD just risen ready for his first cup of coffee, WAS THERE COFFEE IN THE POT?.............but people troll at night and day