If you're doing it outside, make sure you have all your bits and pieces in a suitable container which is close to hand. Better still, commandeer someone to help.
First time I did it, I was rushing back and forth to the fence where I had hung my carrying tray for lube, scissors, etc. After that, I bought a big handyman's apron at one of those tool stands in an agri show. Lots of pockets in which to put the semen, catheters and everything else I think I might need.
Some of the American websites have specially-made weighed "saddles" to put on the sow to simulate the weight of the boar. I'm trying to cobble together a similar thing myself. Last time I tried feed sacks, part-filled and tied with baler twine, but it wasn't perfect. Would have been great to have someone to sit astride her or maintain pressure on her back, but I always end up doing stuff alone.
Also, get yourself some Boar Mate (aerosol spray) if you can. Simulates the smell of the boar and helps get them in the mood. Spray some on a cloth and hold it to her nose. Mind you, it's a difficult smell to wash off your hands!
Good luck and let us know how you get on.