Rain Covers?

Good day gents (and ladies), anyone here could recommend a good (and cheap) camera rain cover? I know some brands like Op Tech, Kata and Think Tank Photo had one, but I'm looking for something much tougher that can secure my camera from all sides. I will be traveling next month and taking pictures of water caves and seascapes. I don't think splashes of water will be the main problem, but the water itself. I'll be traveling by the use of small boats so seawater will be everywhere. I need some kind of zip pouch, that would atleast cover the camera up to 10ft (deeper is better). I don't have enough cash for hard cases, and they would be extremely heavy for me to carry all day long. Any recommendations or DUIs?

Would dry bags used for rafting from an outdoor store work?


Here is a link for a few styles


http://www.rei.com/search?query=waterproof+bag&button.x=0&but ton.y=0

I guess I could give them a try, especially those clear bags. I'll look for them locally.

http://www.surfhousings.com/

Thanks! But, for about 1000 USD on a 50D housing, I might as well spend a bit more for an Ikelite underwater case http://www.bhphotovideo.com/c/product/590500-REG/Ikelite_6870_50_6870_50_eTTL_Housing_f_.html





But right now, money IS a problem so I'm looking for something cheap.

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<p style="margin-bottom: 0in;"]Wow these are cool, I've wanted to get
some kind of under water housing but can't even think about paying
3000 to 5000 dollars for one unless I had a job lined up that would
pay for it. Without the housing its hard to get those kind of
jobs. Under water photography can be so cool. This housing for
the 5DII would be great for covering weather related events like
tornados, heavy snow storms and such plus getting shallow water event
and action photography.Have not seen the price of these units
yet so I'm probably getting ahead of myself. Thanks for sharing the
link!

http://vortexmedia.com/SJ1.html Check out the storm jacket it may work for you.

Oh my... these are almost perfect! I can buy one for the 580 EX and another one for the body + lens combo while using a CPL filter. Thanks!





Alternatively, I found this:


http://forum.lowyat.net/topic/1170912


http://www.digitalwalkerzoom.com/pro...dslr_wpx1.html


http://www.digitalwalkerzoom.com/pro...dslr_wpx2.html





They're completely waterproof up to a few meters (perfect for small boat riding plus I don't fear water anymore). On the downside is, it's kinda bulky (relatively) plus I can't use a CPL filter obviously. Your thoughts? These seems like cheap copies of EWA Marine underwater housings. I saw one lately and it's cheap (less than 100 USD).