I backpacked and kited Brasil, ecuador and peru for 6 months. Peru is hands down the best place to wave kite although with a girlfriend who doesn't kite it could be tricky. Lobitos is amazing but there is NOTHING to do otherwise. Mancora is an hour up the road and whilst it gets busy there are some good bars and restaurants. The other place in Peru i'd recommend for wave kiting is Pacasmayo which is a fairly large town with long long wavesbut is in no way touristy.

Brazil is the other option i'd recommend. All based in the northeast, the stretch from Cumbuco to Jericocoara (about 400kms) is simply amazing. The best time is july to December and most of the towns have really nice places to stay with swimming pools etc to stay for non-kiters. Brazil in itself is worth a visit, just being there is an experience if you kite or not.

I dont really recommend you Venezuela you can getting robbed, kidnapped or killed. They live a dificult Political situation.

+1 for peru - great kiting. Belize - Caye Caulker / Ambergris Caye is OK too. I was there last February. Kited 4/7 days - 2x14m+12m+10m - kinda like North Qld but weaker. If you're passing through the Puerto Rico or Domincan Republic (Caberete) there is some good kiting. Costa Rica has some high wind kiting around Arenal and on the Pacific Coast. Panama has some out of the way spots. Northern Brazil is awesome but out of the way. Florionopolis in Southern Brazil has less consistent wind but comes with a great party scene for the g/f if that's your thing.

All that said, you've gotta be pretty determined I you're considering dragging your kite gear around when you're backpacking. It's been a few years since I've been to alot of those spots but there were no/poor rental options. I live in the US now and think that Australia's kite scene is way better (with the exception of northern Brazil). I'd leave the gear home, not fixate on trying to find spots to rent, and just enjoy the travel - central/south america are a ton of fun. If you find anywhere magic you can always come back one day.

Oh yeah I'm nit gonna bring my kiting gear haha that would be crazy.. I'm gonna have to rent it here and there..hopefully ill find some places. thanks for all the feedback

In short, Peru waves, Brazil Freestyle. Oh and the women in brazil- mama!

And I think you will have a dead easy time finding rental gear in Cumbuco. So unless you are wave monkey, then Cumbuco is your best bet. Your GF will have plenty to do there also...unlike Peru.

Oh, and most of the places have a deal that if there is no wind on the day, then you don't pay for accomadation. Which (only speaking from word of mouth), won't happen between July-December. It is always good :-)