Extreme wind protection (100+ km/h)

The furry wind shield ("dead cat" and other funny names) for this kind of situations is a MUST! :)

Try switching the mics to a single omni within the blimp, they are less prone to wind noise.

You could also add a wind screen directly to the mic.

If you reverse the position of the mic, so it is facing away from the direction of travel there will be less wind hitting the capsule directly.

If you still want stereo attach a spaced omni pair to the rear of the vehicle.

I think Rycote make 'Hi Wind covers' designed for more severe wind than just using their normal wind jammers, not sure if they make them for stereo baskets but its worth asking.

One of the special features on the Master and Commander DVD has a look at how Richard King went about capturing the sound of the sails. I vaguely remember them driving them through a desert at some really fast speeds to for the recordings.

At those speeds drafting is probably going to yield the best results. You'll probably gain a lot of latitude by placing the mic in such a way as to not have it come into direct wind contact.

This usually means placing it on the rear of the vehicle in the jetstream it causes, but you could potentially rig up some other kind of wind shear with another suction cup and some form of fin, though you'd have to test that rig out to make sure it doesn't generate any new noise on its own.

I've had good luck by using smaller mics that can be tucked into wind protected corners of vehicles for high speed recordings (just be sure to mechanically isolate them from the frame). The Sanken COS11 comes with me for every vehicle record I do. Sanken CUBs work wonders as well.

wind is an incredibly difficult thing to deal with on vehicle recordings that I haven't personally mastered yet.

Hmm...

You could try building a buffer of some kind around the mic position. Cardboard and duct tape first came to mind, then the rest of my brain kicked in and told me how stupid that was.

Can you fit a single rycote inside the double? I have no idea how you'd rig that up, but it's a thought.

You could try building an enclosure out of chicken wire or something like that and cover it with a reasonably thick fabric.

You might find some interesting/helpful mic'ing techniques in this video.

[youtube]sY7KhvdtB9I[/youtube]