Small planes are not the best choices for smoke . Larger gas powered models work best. The weight of a smoke unit on a small plane is not too fun either. Biggest problem with nitro motors is that the muffler doesn't get hot enough to burn the smoke oil.
Try a one time usage smoke canister. Straps to the underside of your plane at the proper CG and is lit with a fuse. Exit hole must be pointed down of course. Directions are on the package. Burns for about 3 minutes . Thick, white smoke. Sorry I don't have a link for you .