Wow I saw those bondo pictures and my jaw literally dropped. GAH ! Two things: 1) Judging by the streaking in the finish you either put too much hardener in or tried to work it too late into the cure process. 2) Not sure what the consensus is around here but I would NEVER EVER use bondo on a play field. Especially around artwork. The chemical reaction that occurs when that stuff cures can cause severe damage to the field if you are not careful or experienced. Fix your cracks, dents, and holes with a wood putty. Its workable longer, easier to form, and isn't a hazardous chemical. If you absolutely have to use something more durable than wood putty use icing ( http://www.tcpglobal.com/USC-26006_5.html?gclid=CP3n_6b5s8sCFRMlgQod7mEEkA#.VuBFzOa8w8I ). Its similar to bondo but is softer and WAY easier to sand smooth or ship away...Yikes.