Paul and All:
I have a few engines to install and tinker with and have been trying to figure out how to do this in a safe manner. The old method of 2 by 6's was just too much work. I was lucky enough to get one of those Harbor Freight hoists for 25 bucks the other day and used it to make the T stand so that a rail with a hoist cart could be clamped onto it. Diagonal bracing, not shown but also coming from the hoist, will keep the outfit from leaning left or right. Here are some photos of a really cheap fix.
Here is the crane laying on its side, hiding the hand pump up cylinder. It lacks only 1 piece of 2 and 1/4 inch steel tubing to finish the project:
Here are the parts dissasembled. The long arms that folded down, became the uprights, with the bottom "T" part taken from the frame and the crane arm. The tube that slid in and out of the crane arm, became one of the extender pieces and fits perfectly inside the long arm. the cross pieces were cut from the frame as well. The diagonals will be clamped into place as each boat is different and requires different heights. Not shown yet is the rail that goes from T to T that the hoist cart rolls on.
And here are a couple of shots showing the completed T frame, then extended.
I will get a couple of photos of it in place once I go out to the boat.