The "launch permit" is your cheap option and is good at all state parks and PFBC lakes, but is only good if you paddle. If you go with a canoe and put an electric trolling motor on it you then need to register it through the PFBC, which is also good on all state parks and PFBC lakes. There may be lakes that will require an additional permit(county parks for example).
Go to the PFBC website an snoop around under the boating sections.
“Would it save you a lot of time if I just gave up and went mad now?” Douglas Adams