Hi Rob!
I'm in the middle of (finally) rigging my spinnaker myself. What I did was buy a 72" pole from Intensity Sails, actually made by Selden (in South Carolina):
https://www.intensitysails.com/sesppoforda.htmlTook about three weeks to show up, Selden is a Swedish company, but has a production facility near Charleston. Intensity's price was cheaper than what I could find direct from Selden. However, the pole was actually custom made for me (via Intensity), they're not stocking a stash of DS poles... so, I'm sure that if you want a 74" pole, you could negotiate it with either Intensity or Selden. And... ahem.. right now everyone wants any available work, I'm sure your order would be appreciated.
Now, GL will tell you, and he'll be quite right, that you can get yourself a set of spinnaker jaws and build your own pole, using bamboo and some glass. If you already have biaxial tape and epoxy lying around, it's a much cheaper route, probably $50-70 for the jaws (ebay!) and you can scrounge bamboo. All depends on your ready cash, supplies, and tolerance for doing more epoxy work. My own tolerance is pretty damn low, I've done enough spar-making to last me a few lifetimes.
Don't forget that you still have to splash out for spinnaker sheets, halyard, up/downhaul (use bungee if you got some), turning blocks, halyard block, sister clips, ondeck guy hooks of some sort, etc, etc, etc. Suffice to say that the almost brand new, used-only-once spinnaker that I picked up for $75 (class legal too!) has cost me over $500 in STUFF so far, not including the pole. That being said, I went top-of-the-line for everything (lightweight, low stretch floating NOVABRAID(ed) sheets, for instance), and I slowly accumulated what I needed over the past 2 years. So was not as painful a spend. I bought the spin pole outright because I finally had a bit of spare time and spare cash at the same moment.
Of course, that was January, now I have NO spare time (working my butt off, believe it or not) and I'm holding onto every spare penny. And I'm not venturing over to my local lake for a while, just doesn't feel right with the current crisis. Well.. here we are. Enjoy whatever you do with your boat. For me boatwork is half the fun, I'm dreaming along as I scrape, sand, clean, rig, etc. It's all good.
Tom