Hi Rosemary,
I use the stays'l halyard for the pole's topping lift and do not use a downhaul. However, I have used a forward guy on occasion to keep the chute from surging, and when this guy is deployed (usually out to the end of the bowsprit to a snatchblock and back to the windlass capstan), it pulls against the spinnaker sheet, in affect keeping the pole both forward and down due to the triangular shape of pull. I don't have any photos of this setup; we usually only pole out if on a run and in the ocean, and then I never seem to be thinking about photos :)
As for the stays'l, we too have a release lever. I lashed a 1 1/2" stainless ring to the as low as possible on the starboard stanchion by the forward end of the cabin trunk. When not in use, we move the stays'l back there and attach the release lever to that ring. (Hint, use some twine and tie that releasable pin to the bottom of the release lever!!!)
Here is an old photo from before our deck and rig renovation; I've since lashed the ring lower and the stays'l stay fully tightens.
Also, we stow our telescoping pole vertical on the mast, parallel to the foward lower shroud. I found some bronze eye bolts that that I use for the pin on the forward lower shroud's lower turnbuckle toggle. The jaw of the pole clips in to the ring and hangs out there. You can see the eye bolt in the photo above;
here is a photo of the pole stored vertically.
Hope this helps!
~Aaron