I know what you are going through. Hang in there and have comfort that your animals had a great life up until the last instant. You will get better and don’t give up! What you are doing is far better than what happens to animals in the industrial agricultural system.
We are new to rabbit butchering as well and found the broomstick method worked really well. It seems to be instantaneous death as far as we could tell, with no struggling at all. We plan to keep using this method. We are trying to save and be frugal so we did not want to spend on tools we did not already have. We’ve processed 1 adult buck, 1 adult doe, and 5 kits so far. We will be processing 9 kits within the next 2 weeks.
We get setup ahead of time with a blunt heavy stick on hand in case the broomstick is not instant. We always get excessively prepared before killing an animal and in the case of rabbits, we practice with old blankets to refine our technique. We also had sharp knives right there so that as soon as the neck is broken, we bleed right onto the grass or snow and then my husband proceeds with processing in the garage (in summer, no flies, and in winter, it is heated).
I hope this helps. With 2 people especially, the broomstick method is really easy. It is easy for 1 person if you have balance but my husband is old and has balance issues so for us it works better with both of us.
I hope it saves you buying the bolt thingamagig. We watched YouTube videos about the bolt method before our first processing and it looks like it is tricky to use and you need to have the right placement on the head or the rabbit will not be rendered unconscious. I’ve heard people say the broomstick method bruises the shoulder meat but it wasn’t anything we noticed. If we we’re selling the meat, it might be different.
My husband uses cervical dislocation on young cockerels and likewise it is instant.