I would do Santuit Saturday and Mystic/Middle pond Sunday. Avoid boat traffic that way and Middle has small car topper launch and a cut that goes into mystic pond. I have never fished mystic/middle them but it has a herring run so the fish population should be doing well and habitat looks ok clear water. Also has largemouth and smallmouth and fishing pressure should be almost non existent. Top water bit some where like that could be insane. that will give you totally different experiences Santuit is one of the only mud hole dirty water ponds on the cape and Middle looks clean and clear. If you want to add a third and jump around one day John's pond has some great fish in it but gets a lot more turneys and fish are bit smarter.