I've been using a Morlley Little Alligator volume pedal for over a year as a solo boost. I keep the minimum volume set a 3 o'clock.
It works fine at gigs where we use a pro soundman, and he also kicks in the solo boost on his board.
This past weekend, we played a freebie outdoor show and the host band set up their 10,000 watt p.a. It was pretty much get a good level during a 1 song soundcheck and you're on your own for the rest of your set. The overall rhythm mix was great, but the volume pedal and even my DS-1 which I use for putting a little more hair on my solos wasn't enough to boost the solo to the point where it could be heard clearly above the mix.
I think I might choose your method of boosting my solos with a EQ pedal.
Can anyone recommend a nice EQ stomp box that doesn't add a ton of noise to the signal? I've got an old DOD FX-40 EQ, but it's noisy as hell, even when by-passed.