I'm heading to Vietnam next year to motorbike around the country side for a couple of weeks with a couple of mates. Im planning on taking my camera this time and I wanted to ask a question about landscape haze. Asia as most people know is particularly bad for haze and I was wondering if there is a filter or similar that can help with reducing the haze on capture. I know CPL improves contrast so will likely help but I often like to take pano's and CPL's can really make the sky look different between frames so I prefer not to use it when doing pano's.

Ive also read a couple of PP techniques to reduce haze.
1. Unsharp mask radius-50 amount -12
2. duplicate layer - blend at overlay or soft light and desaturate the layer

If you have some other variants I'd be interested to hear from you