Semi-Guided? Not sure what that really means. They will locate and drive you close to the antelope and let you go on your own from there?

They really are not an animal to "Stalk". For many years, my family has hunted them on "water" - meaning we setup a blind or tree stand on a water hole, water well, windmill producing water for Cattle. Sit and wait.

If the guide already has something like this setup, then that is good I would say.

I've heard of folks shooting fancy compound bows, over draws, light arrows out to a 100 yards and hitting the animals successfully. Equipment costs will be High I believe.

So, I'm not sure this is any help? Just depends on what the Guide involves.