|A frame in position|
Various pieces of string were tied to it to hold it in place, the forestay and shrouds were attached to the mast and the forestay led through a block on the A Frame. A strong heave on the forestay showed that the device worked and the mast rose into position.
When the time came to lower the mast, it descended onto the rest under reasonable control. All that has to be done now is to work out how to store the frame whilst at sea!
US readers: Aluminum