American John J. Montgomery invented and experimented with controllable spring-loaded trailing edge "flaps" on his second glider (1885) for roll control. Roll control was later expanded on his third glider (1886) to rotation of the entire wing as a wingeron.  Later, Montgomery independently devised a system for wing warping, using model gliders first and then man-carrying machines with wing warping as early as 1903 through 1905 such as those used on The Santa Clara glider (1905). Montgomery patented this system of wing warping at precisely the same time as the Wrights,  and was routinely requested during the middle of the Wright Brothers patent war to make the Montgomery patent available more broadly to other aviators for the specific purpose of avoiding the Wright Brothers' patent. 
Over the next few years, they continued to develop their aircraft. However, they were conscious of needing to gain strong patents to make their aircraft commercially viable. They became reluctant to reveal too much about their flights and disliked reporters taking photos of their designs. Their secret approach and competing claims by other aircraft designers meant that for many years their inventions and flights were met with either indifference or scepticism. However, in 1908, Wilbur began public demonstrations in Le Mans, France. His ability to effortlessly make turns and manoeuvre the aircraft caused a sea change in public opinion, and the display of technically challenging flights caused widespread public acclaim and enthusiasm.