I found a pic of the Pogo's staysail setup.I can tell you from personal experience that a well-founded solent setup is a dream. As Rich mentions the key is getting enough tension on the stay to prevent sag that will drastically overpower the sail. On the pogo, the Dyneema DUX (pre-stretched) stay is tensioned with a 12:1 block system lead aft to a 42:1 power ratio winch. Do the math to figure how much a man could load that system up. You could break the boat. It then locks at the deck with a remote halyard lock to keep any (slight) stretching of the tension system out of the stay. In 30+ sustained knots we simply powered upwind under reefed main and solent like a witch.
The rightmost blue line is a spectra-cored wonder that starts at cockpit in a clutch and a Harken 42 winch. Run runs forward to that remote-release halyard lock, and down a 90 degree turn to a 16:1 tackle system inside the anchor locker (rear bulkhead) and secured to the hull. It then runs up through that a deck penetration and terminates in a dogbone. They stay (dyneema DUX) is stored at the mast until needed, when it secured to the dogbone then tensioned. The halyard lock is engaged to minimize stretch and stay sag. You can REALLY dial that on.
The solent sail often lives on the foredeck, in a bag lashed to the deck. It attaches to the stay with wichard clips.