The thread about the Blast Cult 145 basses got me thinking... If that's all that's needed to reduce feedback when playing at stupid volumes, can't you just insert a 2nd soundpost into any bass and create a sort of impedence? Something I could simply remove when I didn't need it anymore and you could use a nice fancy bass without having to buy a second one? It wouldn't cost much to have a luthier make a new one and it's something that is reversible. Prob works better than stuffing foam in the F-holes. Thoughts? It also makes me think that there could be some weird issues with the distribution of pressure between two sound posts but maybe it's not that big of a deal.