Waterproof sat nav case

Hi Forum.  Great news!  I'm picking up my first SWing tomorrow.  Whoop!  I've bought a Garmin 6" sat nav, but, stap me, there are no waterproof cases in which it will fit available to purchase, not even on eBay..!  Can anyone recommend a case with mount, please?  The Garmin unit is 17cm x 10 x 2.  Thanks, guys.  
Incidentally, I'm getting a 2008 model with but 7000 miles on the clock.  SWeet.   Bit of an adventure; I've gotta get the train to Lincolnshire - 4 changes - and then ride ma new hog back 300 miles to Devon, all in one day, and the latter half of my journey looks to be replete with type 7 rain; lord-a-lordy.  It will be worth it!    Wish me luck, flipside dudes.

Update.  Well, flip me, I made it alive.  Thanks for the valuable experience, Storm Angus!  I got my Silverwing and it's a beaut.  Excellent condition and a swish ride, albeit tested only in v harsh conditions - type 9 rain in places, khriiist!  And my gear was definitely not "waterproof".  Gordon Bennett, it was an ordeal.  Still, I now have my SWing and it seems like a SWeet ride; I was impressed with how you can be cruising at 70, power on and feel it move.  Excellent.  The fitted screen must have offered some protection, but I'd forgotten how bleedin' loud the wind noise is at those speeds.  I just happened to have some ear plugs with me and they made it a much more comfortable tide.  I mean, ride.  However, a screen tall enough that I would have to look through would have obscured my view in the horrid weather even more.   My preference is for rain-repellent coated (Rain X) clear goggles as I find the visor less good than this, but I will try it again with more Rain X on it.  
Has anyone got any suggestions for improving visibility in night rain..?

The SWing is a heavy bugger, though.  I nearly dropped it sideways at one stop..!

Enjoy the ride home lol, at least silverwings give decent westher protection.
There are plenty of motorcycle satnav cases out there, but for smaller units. Google motorcycle sat nav case and try your luck.

Cheers, Stevo.

If I haven't welcomed you to the forum before this; Welcome, Jaques.

Please don't refer to your Silverwing as a "hog". That term belongs to that 
motorcycle favored by the pirate-costumed crowd. We've risen above that methinks.

Tim

Welcome aboard and enjoy your SWing! I use a zip lock bag on my GPS in the event of precipitation. That said however I live in Arizona where rain is not common. Good luck.

Welcome from the Pacific Northwest.

I use a zip lock bag like Glenn spoke of.

Cosmic_Jumper wrote:

If I haven't welcomed you to the forum before this; Welcome, Jaques.

Please don't refer to your Silverwing as a "hog". That term belongs to that 
motorcycle favored by the pirate-costumed crowd. We've risen above that methinks.

Tim

Thanks, Tim. I use the term, hog, in a post-ironic fashion in order to raise the ire of those who might not deem the SWing and its ilk 'proper' motorbikes. Foolish fools. We're all two-wheeled siblings of the road innit.

GHM-PM wrote:

Welcome aboard and enjoy your SWing!  I use a zip lock bag on my GPS in the event of precipitation. That said however I live in Arizona where rain is not common.  Good luck.

Thanks, G. A good suggestion, bit I'm gonna go for something a little more tailored. :-)

Modernman1953 wrote:

Welcome from the Pacific Northwest.

I use a zip lock bag like Glenn spoke of.  

Cheers, M. (But how do you attach it to yr bike?)

Sounds like you've enjoyed the ride despite the puddles.

jaquesaulait wrote:

Modernman1953 wrote:

Welcome from the Pacific Northwest.

I use a zip lock bag like Glenn spoke of.  

Cheers, M.  (But how do you attach it to yr bike?)

I use a high tech bread sack wire tie. Note, I only use it in a down pour. My GPS is mounted on my handle bar brake handle bolts and it is behind the windshield and it doesn't get wet unless I am traveling in heavy rains and I am stuck in slow traffic.

Often times, in that environment, I might just remove it and stow it away but I do haul a baggie and a wire tie in case I am in a situation where I need the GPS.

I do the same thing with my phone.