Depending on how big / heavy the boat is... I have an 18' Glass Half Cabin
(1.2t?) and when I changed trailer (due to old one rusting apart)...
Back the trailer onto lawn area and put a couple old tyres down by the
transom. Tie the stern to a strong pillar with 2 strong ropes. Unhitch the
trailer coupling and tilt the whole lot up until the transom is near the
tyres. Then towed the trailer out from under the boat with a rope tied to
the drawbar.
Putting new trailer under boat was a reverse of above, but I winched the
trailer under the boat.

It was a lot easier then I had imagined at that time

"Richard Devereux" wrote in message
...
I have a boat that is on an old trailer that I would like to repair. I am
not comfortable towing the trailer with the boat. A visual inspection & my
engineering background suggest that would not be a smart move.

Does anyone have a suggestion as to how to get the boat off the trailer in
the backyard so I can move the trailer into my workshop & do the repairs.
Obviously I would also then need to get the boat back onto the trailer.

I do not have the luxury of an area of water or small dam nearby to launch
and leave the boat.

Any thoughts would be appreciated.

Richard.