The Canard fences that I made were a great experiment and I haven't seen any reduction in speed or climb with them, however I noticed a large reduction in aft trim authority that has inspired me to make new tips that have been tried and true by James Redmon on his Berkut. The new tips will be bolt on as well and will be swept back like Redmons, which is not like the standard Roncz tips. A speed increase is unknown but more trim authority is guaranteed and a must! It will be fun to see how these perform next weekend. :)