Visiting USA/Canada, want to wakeboard!

Hi,
I'm taking a little holiday to visit some friends scattered around the place and because it will be summer there (and winter in New Zealand where I'm from) I would like to make the most of it and get out on the water at least once. Can someone please suggest either cable parks or places I can take a lesson or two for a day (I won't have gear with me, travelling light) in any of the following areas:
San Francisco/Santa Cruz area
Portland
Vancouver
Boston or elsewhere in MA

Thanks for any info you can give me on the wakeboarding scene in these areas.

We are ride out of lake Winnipesaukee in NH which is about 2 hours north of Boston. Shoot me an email at wakeupandride@gmail.com or a pm on here.

Hey, thanks
I'll send you an email once I sort out my plans and know when (and for how long) I'll be in MA.
Thanks for being so friendly and helpful.

Check out Koppert Lake while you are in the Portland area. www.koppertlake.com

Hey Eric,
thanks for the info on Koppert lake. That's looking my best possibility at the moment as I'm spending a few days in Portland with a friend who has agreed to go there with me (she will be trying out wakeboarding for the first time!) so thanks for suggesting it. I wouldn't have known it was there otherwise.

Anthony, I haven't sorted out what I'm doing in MA yet, but staying with a friend with young kids and a baby, so less likely to be able to get her to take me wakeboarding for a day but if it looks like I'm going to have a spare day and some way of heading north, I'll email. Thanks!!!

Last place on the list is now Las Vegas. And before heading home I'm keen to buy some gear (limited selection here in NZ), so can anyone tell me if there is a good wakeboard store in Vegas? Especially one stocking Liquid Force gear.
Thanks.