Emergency: need traditional Boatlift(?), my 50ft-er sinks without shore-pumps...

[woodenMFV]

I managed to being towed to a marina for Hauling-Out (..and almost sunk on that 7 miles!) just to been told that they don't and can't haul her out with their 30-ton-Sling-Travel-lift, after the first few meters out! So back in the water again, pumping and patching since then, nothing helps since now.

Reasons why it did not work:
- the slings only carry 30 tons (..the water in the structure made the boat heavier than I thought!)
- the slings apply too much pressure to the old hull (16ft beam), it could collapse

Now I check pumps every tide (twice a day), and search a boatyard with the "old-style" facility, the "rail-System" with the 4 posts to hold the boat upright. (..a subaqua-lift (for real ships) is too expensive for me, starts at over 1000)

Does anybody know the exact eglish term for such a facility? Or if anybody is familiar with UK's southcoast near Portsmouth, any hint would help! It seems all those trolley-systems has been scrapped over the years...nobody here knows anything (apart the fact that they don't like old boats)

There are some modern alternatives, which could work:
- found an american company,"sea-lift com", which is a hydraulic trolley.

Any other ideas? I appreciate ANY hints or tips, it's very urgent. The boat should go on the dry for a longer period for complete sheating.

Thanks very much!