Hi Shug. I am an intermediate/advanced flier, and I’ve built and flown a couple of Prowlers. My first flyable Prowler featured a built up wing, a monokote finish and a stock OS 40FP. I did not pay any attention to weight during its construction or the first few years of flying it. It had the rudder glued with offset per the plans. It flew pretty good, eventhough it did weigh 46 ounces, including about 1.5-2 ounces of tail weight. It would go through winds that caused other fliers to sit out.
My second flyable Prowler featured a Lost Foam Wing with a molded leading edge. Again, a monokote finish, powered by an AeroTiger 36. Weight is 34 ounces with about an ounce of tail weight. This time, I hinged the rudder. With this plane, I won Intermediate at the Dallas contest last year. I’ve never adjusted the rudder.
My non-expert opinion is not to bother hinging the rudder. I would permanently offset it slightly, 1/16 to 1/8 of an inch, just to ensure it’s not offset toward the inside of the circle. The plane flies great, just keep the nose as light as possible while maintaining stiffness. When I was building my second Prowler, Bob Hunt told me they did not install the inside nose tripler with low vibration engines; it’s something to consider. (But I always liked the look of it!)
Good luck and enjoy it!
Frank