Use a lighter shaft that fits your profile, and then add weight inside the shaft to bring back feel and awareness of the club. This is a lot easier, and less expensive than inter-changeable shaft systems.
The real key to this system is the ability to move the weight any where from 4-10 in. from the butt end of the grip to fine tune the release of the club head. ( closer to butt, easier to release, closer to the head, ( 10” down) the more effort it takes to release the head.)
All this with out altering shaft flex. or adding weight to the head.
Weights are 15 and 25 grams for swing clubs ( driver and fairway woods) and 50, 100, 150 grams for putters.