Web alarm clock for 9:48 p.m.
You are halfway through moving the boat motor when the 9:48 pm alarm pulls you away from whatever else is in your hands. Use that signal to lift the motor above the tide line, check that it cannot slide back, and finish the job before 10:00 pm. Twelve minutes is enough for careful footing on a dark shore without turning the task into a late-night rush.
Your boat motor reminder depends on this page remaining active until the set time. If you close the tab or browser, or your phone goes to sleep, the alarm may never sound, leaving the motor where the rising water can reach it. Keep the page open in the foreground, leave the phone awake, and set the volume high enough to hear over waves, wind, or an electric fan nearby.
Once the motor is secured, avoid letting this evening task consume the sleep left before morning. Put away only the gear needed to clear the path, rinse salt from your hands, and leave any longer cleanup for daylight. At 9:48 pm, a brief check of the motor’s position and fastening can close the job cleanly while preserving the rest of the night.