I have submitted a proposed set of 1/2A Scale rules to the Toronto Balsa Beavers , of which I am now a card carrying member. If approved without too much amendment, your model should be eligible to compete.
My rules include pretty much anything powered by one or two .049's or any number of engines with a total displacement up to .10.
Chris Brownhill, master and commander, has given me positive feedback. Last year's event included a profile requirement which I now propose to delete. This opens the door to your plane and Black Hawk hollow logs.
PS: The club is now being subjected to a user fee by the City of Toronto. I invite anybody who wants to fly at Centennial Park to add you name and money (30 loons) to the club and help keep this great venue.