Dont worry. They dont move.
Just take sufficient distance to accelerate/gain velocity, engage AB/MWD and fly right at it to watch them bump km away.
Contact someone like Ima or someone else at CODE for specifics on optimum bump fits. Im sure they will be glad to help especially you, especially in this endevour. The math of it all is calculable. Its not magic. Typically its Minmatar related ships for faster acceleration, but mass is also important.
I used to do this cos I hated multiboxers (botters or not) depleting MY ice fields, without knowing the optimum bump fit. I tell you, the PMs alone are worth it. Goddam they get angry at being bumped off the field.
If they lose even a few seconds on their optimum yields, they lose their minds.