Could treasure-fleet victories have preserved the Protectorate?

The closing counterfactual starts from Protectorate efforts to secure England's economy and position abroad while its permanent political settlement remained unresolved. It asks what might have followed a complete victory at Cadiz and the capture of the sixteen-ship fleet expected the next year. Repeated windfalls could have supplied both money and the prestige of visible strategic success. Such gains might have strengthened legitimacy and stability, though the question remains open.