I made an outlet hose for my bilge pump with pvc. I got some sand hot on the stove and pored it into a pvc pipe. I hammered nails into my workbench at the appropriate places, and laid the hot, flexible pipe on the bench so the nails would hold the pipe the way I wanted it until it cooled.
Don't cut any holes in the transom or sides to evacuate the bilge water. Just throw a hose over the top of the transom or fab some PVC or copper over the transom and secure it so it stays functional. Its also nice to wire it to a switch so you can manually turn it on AND have it connected to a float that will turn it on if the water raises the float. That way if its left in the water overnight for days/weeks at a time you don't have to fuss with it if the leak gets worse.
Thanks for the input guys!
To answer the question about the leak location: I can not pinpoint its exact location. It's such a tight and dark space under the hull and above the first trailer roller where the two bottom seams meet that I can only see where the water from the leak is forming small droplets on the bottom seam, but can not determine the origin of the leak itself.
So I guess I'll follow advice and consider this an acceptable leak that a bilge pump can handle and place the bilge pump pick-up as close to the transem as possible on the heavy side.
The bilge pump on my ‘54 Vagabond sits inside one of the compartments created by the triangular bracing at the transom. I usually hit the on switch any time we come
off plane as the nose comes up and the water collects back there. I have a leak of around a similar drop rate to what you mention.
We also used water tight pop rivets when reinforcing the transom, it wasn’t a popular decision, but they have held, and we weren’t going to make the investment a rivet gun required. I trust my resident engineer.
For whatever we lose(like a you or a me) it's always ourselves we find in the sea.