1961 18ft Starcraft holiday draining issues.

[Nateguy]

1961 18ft Starcraft holiday draining issues.
The boats supports are solid starboard to port, with no drain channel. As you can see each section holds water.
Any ideas without sacrificing structural integrity?

 

[GA_Boater]

Each rib should have drainage ports (can't remember the name) at the lowest point. The ports clog with muck over the years. I see plenty of muck.

Most of us have used pressure washing to clear the clogs and it takes awhile until the water runs clear. Raise the bow as high as you can and start flushing at the bow.

 

[jbcurt00]

Limber holes should be a slighy raised blister along both fore & aft flat rivetted edge of every rib from helm +/- to transom