It's easy!
The spinnaker on the 170 is easier than other boats because you don't have to worry about a pole. It takes a lot of practice to learn the best way to gybe. I usually bear off to almost dead downwind and before I gybe we start pulling the spinnaker around the forestay. If you gybe first the spinnaker will blow inside the forestay and you'll have to gybe back and start over. Once you get the spinnaker around then you can gybe. Our raising procedure is pretty simple. My crew gets everything ready as I raise the centerboard at least halfway up, maybe a little more. Next, my crew pulls the clew line to about 4 inches from the bowsprit block. The next step is to start pulling the halyard and raise as I grab the sheet and get the spinnaker flying. The crew then rolls up the jib, tidies up any loose lines and then we slide to the back of the boat and fly. I usually am on my knees in the back of the boat just in front of the tiller. I feel more balanced and comfortable there. The take down is just the reverse. Unroll the jib, grab the bottom of the spinnaker after I pull it in tight with the sheet, and then release the clew line and then release the halyard and stuff the spinnaker in the forward area. (Make sure you pull everything in under the jib sheet!) As the spinnaker is coming down I lower the centerboard and we're ready to round the mark and head upwind.One thing I try from time to time in light air is on the dead down-wind leg, we will pull the spinnaker around and I will hold the sheet out and go wing and wing. This works pretty well if you need to go by-the-lee a little. I think it is also faster to sail a straight line in the dead downwind leg rather than staying high and gybing a lot. Hope this hasn't been too long winded and I hope it helps.