I have done it several times but since I don’t know your “handyman” skill level it is hard to answer your question. Here are some things that spring to mind:
– With the mast up and the floorboards removed put the boat on its side with the gunwale on something soft (lawn, blanket or fenders).
– Use something heavy on the mast top to prevent the boat from rising unexpectedly (a case of beer will do nicely ;-).
– Spent some time in getting the bailers flush with the bottom by adding rubber or you may even want to add a PVC spacer between the rubbers (use one of the rubber as stencil)
– Use Sika (or the much cheaper ‘Bison MS-polymer’ from a builders store) to fill up the gaps between the bailer and the hull.
– Also use some Sika on the counter sunk bolt heads to make them flush with the bottom.
– Use white spirit or thinner and paper towels (kitchen paper, lots of it) to wipe excess sika off.
– Wear latex gloves or accept your hands to be black for a week.
– Use the rubbers as a template, or make a paper/cardboard template to mark the corners, taking in to account the diameter of the drill.
– Drill the corners with a drill that matches the radius of the bailer’s corners.
– Connect the corners with the blade of a fine tooth iron saw (wrap some paper around it to protect your hands.
– Use a file to finish the hole after sawing.
– Pick a spot next to the CB where the hull is deepest while sailing.
– Stay an inch away from the CB to avoid compromising the strength of the CB case.
And finally: Measure twice, cut once.
– Power drill (battery driven)
– Rats tail (round file)
– Saw blade (fine, iron saw)
– Screw driver and a wrench (or pliers) for the nut
– Sika or MS polymer
– Thinner or white spirit
– Paper towels (lots of them)
– Drill for the corners
– 90-degrees countersink drill (for the bolt heads).
Maybe I have forgotten something, so bring your toolbox, just in case.