Thank you. VERY sage advice. I really hate being the only one who wants things to be better. Tomorrow night is my third gig and I already don't want to go. They have been playing the same songs for over a year and still making timing and structural mistakes. I bail on them though, I may as well move because there's noone left to work with around here. Not to mention they are popular enough that I will have ruined my name in this area.So the sitting thing makes more sense now.
However, do what you've gotta do (within reason) to raise up your bass cab. If you can't hear yourself, it doesn't matter how you look because the band will sound like crap. Do you have another cab you could stack under your rig but not plug in? That'd look professional and solve your problem.
And start bringing your board, just to have, but tread lightly on using the effects. Tasteful is the name of the game. You want folks to notice something changed, but not necessarily that it was you adding an effect.
If they immediately poo-poo these changes, then I'd quit.
If things don't get better, turn your volume all the way down on the third set , but keep "playing", and see what they say. If they don't notice your lack of presence in the mix, quit.
Basically, this band isn't going to pan out for you unless changes come. Wisdom has taught me not to be the guy grasping for excuses to stay and try to make it work when everything else is against it. The trick is knowing the difference between a tough situation and an impossible one.
Good luck!
Be careful what you wish for, right, LOL