Did someone mention that max power is defined on 60 meters in terms of ERP?
That could get expensive because you have to get an antenna that will handle the power, but it's a good point.
You get a "free 3dB" if you have a hundred watt rig... guess if you got one of the 200W rigs out there you could get a free 6dB provided you have an antenna that will handle that.
Had some guy in these forums talking about running a RM Italy amp on 60m to make up for the bad mobile installation but that sounds like a terrible thing to do on 60m, even more so than the other ham bands. I don't know how carefully we're actually being watched in terms of the stated bandwidth restrictions but we really can't tolerate off-channel splatter if we're going to be responsible users of the band.