Jacktheyak has similar to what I am building with minor variations
I only have a single pulley above the keel of the yak and rope to another pulley at the carport edge, then down to a cleat.
There are 2 lift points..above the point just in front the swing footwell..and another behind the cockpit and in front of the rear 10" hatch.
Because of crushing concerns to the hull I lift by a padded timber slat which wont bend [as on roof rack], from each end of the slat a rope curves around the hull to a single point above the keel, where the lift rope attaches.
My biggest headache was the carport itself, which has no cross members, and only alum sheets; I am overcoming this by having two timber arches under the roof at the points required for the Swings lifting points.
The house has an upright attached to the wall, then the cross timber under the roof, to a free standing leg on the lower side of the carport.
Each kayak has a pulley above its keel to lift up and each has its own second pulley before the rope goes down to the cleat.
Because of the Swing measurements set the arch spacing, the front lift slat is above the front hatch on cockpit gunwales on the Espri, and the rear slat is half way down the rear well
The idea is proven by a mate who lifts a tinny with outboard the same way in a shed, and dinghies to davits only have a single lift pulley above the centreline
