I already mentioned memloc a few posts back
Along with other values you set once like ploc and vloc...
But also mentioned you can't be sure they're put to use.
I think spinner actualy changes the oponent memloc sometimes... but once a bot is being messed with then it's usualy in a fight with you, so changing it's memloc is only usefull if you plan on loosing that confrontation
It can be usefull, but pushing 99 into mrepro and such will often have a bigger impact (I know you can't do that with poison, but spinner didn't use poison for this)
If I had to come up with a sequence for poison then my first 3 would be :
shoot
refxpos
refvelup
I'd probably start the cycle over after that, since you never know if more enemies are inbound. But the point is after those 3 sysvars are down your oponent can't shoot or track you, so you can run away or persue him instead.
Normaly I'd probably stick to shoot though, or maybe deltie (And possibly mkslime) if the bot also uses tie attacks, so if someone shoots at you they leave themselves wide open for ties. I actualy considered decoys with deltie and mkslime poison against Saber because it's so damn good at keeping ties off it and producing the slime it needs to stay free.