2000 SAN significant leak - rudder packing?

[msquito]

hey all, put the boat in Tuesday evening, showed up for the first surf of the season after work today. Boat looked low in the water (moored wet), got the cover off and opened the locker to find 8" of water in the bilge!!! This boat has never been 100% dry, but this is absurd. One bilge pump working (pretty easy to diagnose the mid-hull pump not working with that much water in the bilge), decoupled the locker bag and used the ballast pump to help the working bilge pump. Not to be dissuaded, we filled bags and surfed (had to try my new Soulcraft : ))). Got back to the dock, bilge dry enough that the pump wasn't active. I crawled back under the hatch to try and take a peek, looked like some steady drips from the rudder assy. I took a video (youtube - pardon the ick back there, need to do some cleanup), my search-fu suggests that if I'm lucky, it might simply be a case of tightening the rudder packing nut. Does this video support my optimism? Would that rate of drip result in 8" of bilge in 48hrs, or should I be looking elsewhere??? If elsewhere, any suggestions?
thx all - appreciate any insight

[msquito]

Okay, crawled back there after work to tighten the packing nut on the rudder to discover a steady stream of water coming off of what I think is the transmission cooler inline with some 1.5" (ish) hoses under the engine (apex 5.7). Guessing that given age of boat, this is likely a buy new one and replace it kind of situation. Any wisdom on this would be much appreciated.
Cheers

[NautiqueJeff]

Yep. It may not have been winterized properly, and cracked over the winter. Or it may have just failed for no reason. Either way, just replace it. NautiqueParts has them. Use discount code PND for 10% off.