Navvy just hire the nearest passer by to stand on other side of the bike and from around the swingarm hold a barbecue lighter and can of deodorant at the exhaust! Just keep there hands n can out of the shot or if thats a no go then a fly bit of video editing of current footage and hey presto bike shooting flames! Given your now 2 zip down cheating may be the way to go mate!
Or you could consider one of these? FIRE! Exhaust Flame Thrower Kit - Single exciting sports galloping | eBay
A 5sec clip of me flying by almost a year ago at snetty does not constitute round 2 Jimbo! I think you're clutching at wins desperately because you know I will win the track round