PGIJon, take a look at the Selden telescopic spinnaker pole sold in the SBO store.
http://shop.sailboatowners.com/prod.php?14110/
I purchased this for my boat and I believe it is an excellent product. It serves the purpose of a whisker pole at the 2 longest settings and a spinnaker pole at the design length. It's an excellent product at a reasonable price. Match it with a track on your mast and you couldn't be happier. I bought the shortest model for my boat. I considered the mid-sized length because the spin length is slightly longer than my J dimension. In the end, I decided to go with less weight and less cost and compromise with a spin length that is a little shorter than J. These are NOT custom poles, and they are multi-function, so compromises are anticipated ... but the price is reasonable.
When I'm W&W with genoa poled out, I first jibe the main over to the same side of the genoa, then you can jibe the genoa over after releasing the clew from the pole. I'm sure it's not a racing maneuver, but it works for me when I'm changing direction.
The track gives you soooo much more versatility. You can dip pole at spin setting by raising the mast car. The pole has a bridle and the ends are identical so you can also end-for-end when the pole is at whisker pole length. The only thing is the bridle is only balanced when the pole is at design length. I am thinking about modifying a bridle that can be balanced at the various lengths.
Did I already say it is an excellent product? Well, it is. Buy it here at this store. This is the best place to buy sailboat stuff, because it is exclusively for SAILBOAT OWNERS! (hence the name).