I got it pretty bad after a hard crash a couple years ago. The issues were really in my lower legs and hips. Now I do yoga a couple times a week to keep things stretched out. I went and had some serious deep tissue massage from someone with a good understanding of athletic issues to start with and that really helped but is was the yoga that kept it away. I bought this video below and I do the hip openers as well as the standing stretches a couple times a week(about 20 minutes each time) and it keeps the nagging issues at bay. I think I spent about $180 on three painful massage sessions(Scrapping, cupping, she was brutal) and about $25 for the video and foam block (@Dick's Sporting Goods) needed for some of the poses in the video and my issues went away in about 2 weeks. It's more than likely that your issues are elsewhere and they're torquing on your foot. It took me a while to figure that out but once I focused on the calf and the hips, it went away pretty quick.
http://www.protherapysupplies.com/Shop-By-Category/Books-and-Media/Gaiam-AM-Yoga-For-Your-Week-with-Rodney-Yee?gclid=COmzq_Hbx7YCFct7QgodsSEA3A&source=googleps
I will say, the best thing I ever did for snowboard equipment was get a decent pair of cork orthotic inserts for my boots. I've had them for about 8 years now and they were well worth the $200. I've never had any foot pain since...early season, long days, long traverses, nada. You can buy those cheaper do it yourself versions at REI or whatever but you have to get them right of they fugg you up even worse. I just paid to have someone custom fit them for me and they're really sweet.