What kind of body filler can I use on my dirt bike?

So I wrecked my dirt bike (2007 Honda CRF 230F) and and have a couple of scratches in the plastic. What kind of filler should I use? I plan on taking the stickers off and painting the plastic and I do have body work experience and can work bondo. But some say it will stick and some dont. Is there anything else that I could use? Possibly a very thin layer of fiberglass and fill it over with bondo? The scratches arent that deep, so I dont think that would be a problem. So tell me what you all think and why. Thanks.

no bondo will not work.. you need to use plastic urethane epoxy filler that is used on plastic / urethane bumpers . That will flex when the finders move and bonds very well to the plastic . cost is about $15.. the reason bondo does not flex so it would crack or pop out of the scratch when the finders flex..