i say fill it up with some glue and go for it... i wouldnt give up on it till it blows... but thats me im hard headed that way!!! and then when and if they do blow up on me im pissed and through everything around and everything in the air and act like a gorilla for a while and then sit down and pout....lmao...
but hey you might just get one that works... it just depends on how much materail you have to work with... if your like me and scroung and improvise and try and make do out overy every piece of bow wood you come across then go for it if you have plenty and more where that came from then move on...
id give it a chance though just my own opinion...