DO NOT use a tarp! If any wind gets under it, it will whip around and screw up your paint job. I work for a motorcycle dealership, trust me I've seen it all. The best cover I've seen is a Nelson-Rigg Defender 2000 cover. Only one I've seen that's guaranteed 100% waterproof. And, if you get the correct size (prob. a medium), it will fit great. Plus, you will get years of use. Retail is $70, but I'm sure you can get a deal somewhere. Hell, if you're near me, I'll give you a deal on one.