[smokin]

do it! the vibration from NOT having one will rattle your airframe and give you all sorts of possible rf noise issues. they are a lot of money (for a mount) but so is a new airframe!

your setup will last much longer and receive less stress with the soft mount. these pattern planes just don't weigh very much and they take the vibration of big (when put in perspective) and powerful engines. give your airframe a fighting chance and put the soft mount on.....

just my $.02