...saving a b.u.c.
The answer is: It Depends....
From a practical standpoint, the longer the spinn pole, the more hassle to handle and to store on deck. Whatever the length, it will be a separate project for your boat to fit deck chocks or perhaps the newer stanchion-mount chocks, if those work for the stanchion spacing on your boat.
If racing, you get penalized in your rating for an "over-length" pole -- it gives you a potential extra advantage in light air to better project your spinnaker area.
When shopping the used market and trying to save a buck, it is often possible to buy a longer pole and shorten it and re-attach the end. You would probably need new bridles anyway, if the original ones are old and worn. Trip lines would need to be shortened. Small coated SS wire is not expensive and you can do your own swages with one of the inexpensive end-wrench operated "hand held swagers."
Going in, try to find out (from one of the many owners of sisterships on this site) just what OD pole you really should use. I would imagine that anything over 3" would be too much, but I have not sailed on or rigged an E-35.
Sidebar: while you have the new (well, new to you...) pole apart, that is a fine time to stuff the inside with foam "peanuts" so that it will float on that fatefull day when it slips over the side and it takes you a while to reverse course and go back to pick it up. Do not ask why I reccommend this...
What with the cost of a new pole being quite high, used is often a good way to start. Check the ends and the piston slides very carefully. Sometimes corrosion has frozen them in place.
When we bought our boat, the fancy Forespar "trigger" ends were totally corroded/jammed and I had to take the pole completely apart. I finally had to drill out the pole-end alum. casting and sleeve each end with some SS bushings. Then I put in new pistons and springs. Works fine for a decade since.
Note that your J measurement will cause your new pole, when re-sized for your boat, to measure 14" from inside of jaw on one end to inside of jaw on the other end.
And, if I am guessing wrong, thank goodness we have a bunch of owners of similar-size Ericsons lurking here to correct me!
Best Fishes,
Loren in PDX
