As Winter moves in and I only have an arena to play in I find myself not wanting to go to just walk and trot around.
Don't blame you! Even including a canter, I'd get incredibly bored if I were confined to an arena!
I tried spurs, first she tried to buck, that doesn't work on me anymore, then she would trot the fastest trot ever. Then she could care less about the spurs. All of this was in one session.
I suspect your prob there was that you tried to do too much too soon. The spurs were meant to be a 'go faster' cue, but when she went faster you didn't reinforce her for it. So eventually she decided that wasn't working, so tried something else - ignoring them.
I have tried lunging, she could care less about a lunge wip and I always end up looking like a fool running around after her trying to get her to move.
Again, it's about making the 'Right' thing as easy as possible & making sure the 'Right' thing works for her. That means accepting & reinforcing whatever she can give you *towards* your goal, not continuing to push her because she hasn't achieved what you want her to. Eg. if you signalled to her to move off, then backed it up with the lunge whip(starting out just waving it behind her, but progressing to touching her with it if necessary), if she starts to move off in that direction, you need to immediately quit hassling her, so she knows that's what Works for her. If she's going around at a walk & you signal faster, even if she only walks faster, that's what you reinforce her for, so she learns what the cue means. With repetition & success, then you can *gradually* ask for a little more.
People have lots of different ideas about lunging, but I 'lunge' in order to teach & reinforce them responding to me at a distance. My way is to teach them the basics of yielding to all sorts of pressure first, then gradually increase the distance, so that by the time we're at 'lunging' distance, it's already pretty clear what I want of them. If it took me actually having to get after them, I'd consider they haven't 'got' it yet, so would go back to work on easier stuff before progressing to that point more gradually. Remember also that horses don't generalise well at all, so the horse doesn't just 'know' something he's learned with different criteria, environments, etc, but needs to be re-taught. Therefore, if they didn't get it, I'd also possibly fall back to a lesser distance.