If you're not using a douser or a sock for your spinnaker the chute can be launched, retrieved and repacked relatively easy with a little practice.
Launching from the bag is fairly straight forward. Have the wind coming from the quarter or a little abeam to mininmize the chance of having it wrapped around the forestay- the dreaded 'hourglass'. Having the headsail up when launching greatly reduces the odds of this happening. One thing to remember is that once you start and the chute is coming out of the bag then you need to get the halyard raised as quickly as possible- as fast as you can- it ain't going back in. That's a lot of ripstop flapping in the breeze. It helps to have the halyards led back to the cockpit. Also partially trimming the sheet opens up the foot. Once it's up and trimmed then the headsail can be dropped or furled.
To retrieve, unsnap the shackle at the tack or at the pole end (depending if it's an asymmetrical or symmetrical). Now the luff of the chute becomes the leech and the leech becomes the luff and the clew will be blowing downwind. Gather in the foot and loosen the sheet and pulling it in under the boom start stuffing the spinnaker into the open companionway hatch as the halyard is let down.
Now the cabin is full of spinnaker and you wonder how are you going to get it all nicely packed into that 'tiny' bag. This the technique I used when we were racing a mastheaded 26 footer. With a little practice it can be easily accomplished in under two minutes. Sit on one of the quarter berths and put the open spinnaker bag between your legs with the metal hoop resting on top of your thighs. Find the foot of the chute- usually it has a white tape sewn on- then move along the tape until you find the vertical seam running up the center of the chute. You might want to mark the spot with a maker to find it easier next time. Lay this on your lap across the top of the open bag with the foot extending right and left to the sides. Now reach out and grab the material on each side of the vertical seam and pull it in towards you and set it on your lap. Reach back out and keep repeating, pulling in and piling it up on your lap. There'll be times when you'll find the spinnaker twisted. No problem. Just pull it apart sideways and keep going until you get to the head of the sail. Now you've got a big pile of ripstop piled on your lap. Just what you want. All gathered in, no twists and ready to go into the bag. Take a big bunch and stuff it into the bag. Do this a few times until most of it is in the bag then take the cloth on one side and stuff it in, then the other side. When it's all in the bag all you've got is the three corners of the spinnaker sticking out and ready to go again. Pull the spinnaker out of the bag a few times in the cabin and try it.
Sail handling, whether it's the main, headsail or spinnaker, is just a matter of working with the sail and wind instead of against it. There are techniques with hanked-on genoas and mains. Mains being the easiest and quickest, of course.
Rich