I think it could be done the way you envision, but let me play devils advocate

as to why I wouldn't do it.
1. I feel it would be slower to install. With the full one you just throw it over the top like a blanket. No need to attach to anyplace on the pop-top itself.
2. More places you have to seal for air leaks, insects if that is a concern.
3. More fasteners to install. We only have a front and rear place where we have to fasten the bolt rope that goes through the side curtain at the bottom.
Here is a picture of how Ruth modified the stock cover we got with the boat.....
Ruth made it so that there are skirts on the inside and......................
................ outside. That means no need in most instances to have to fasten it down to the deck. We did find some lifting of the sides in winds over 20 mph. You just need to put something heavy on the inside at the front on top of the inside flap. We are going to put some tabs in where we can tie the sides to the pop-top uprights if we get into high winds again. We might also add some side screened in areas similar to what Ruth did to the fronts for cross-ventilation.
The real shortcoming of the orginal cover was lack of any zippered windows with screens for ventilation. She fixed that up front with the new screened windows (above picture) and in the back with a..............................
......................... a screened door that now goes down to where the original one should of gone to to keep water out of the cabin. The orginal one now rolls down if we want to cover the screened area.
One thing to consider with a cover that doesn't go over the top is how are you going to handle the sliding hatch?
We can also pull the door up in light rain and attach it to the bimini to get back and forth to the cockpit.
We are in the boat every night either on anchor or tied to the shore and if it is warm enough the pop-top is up and the cover is on. Going back to my first reason to keep the top portion there one more time. The way it is now I can put it on or take it off in about one minute. Just throw it over the top. Snap the two side curtain lines onto eye straps by the mast. Zip the front up. Run the back of the side curtain lines through some eye straps and take them to the jib cam cleats and cleat them. You are done.
Taking it off is as easy and fast. I do it by myself and just fold it on top of the pop-top. It folds up fairly small and we store it ................
http://purplesagetradingpost.com/sumner ... de-11.html
..............behind the coolers where we also store the sails.
She did all of the sewing with a................
http://purplesagetradingpost.com/sumner ... de-19.html
............... '99 Singer from the 50's that we got off of e-bay. Strong little sewing machine, but as you can see from the picture it is a pain sometimes getting the cover under the small arm. It takes the both of us at those times.
There are more pictures:
(HERE)
Good luck and post pictures,
Sum and Ruth.
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