Wait a minute.....
...After re-reading your post, I am somewhat confused as to how your present spinnaker pole is rigged. Besides keeping the pole from lifiting, the foreguy also prevents the pole from lurching backwards. It counteracts the afterguy (on a smaller boats the lazy sheet becomes the afterguy, larger boats have dedicated guys and sheets). So you need to block the foreguy in a place where that leverage is most efficient, usually right in the center of the foredeck. My friend, if you are racing... why don't you look at the boats you are "racing" against to see how they have their spin gear rigged? There are two styles of poles used. On medium and smaller boats the pole used allows for an "end for end" jibe. On larger boats the pole is fixed to the mast and must be "dipped" for the jibe. Which are you using? Whether you are racing or not, I recommend you study some books such as Tom Whidden's "Art and Science of Sails" or Gary Jobson-Tom Whidden's "Championship Tactics,"
