suction mount is a boss. i use it on my boat and my buggy. never falls off if you put it on right. I did put a foam coozie around the arm of the suction mount just in case it fell off so that it would float.

but ya i put it on my boat all the time.

<object width="400" height="300" ><param name="allowfullscreen" value="true" /><param name="movie" value="http://www.facebook.com/v/1924781994652" /><embed src="http://www.facebook.com/v/1924781994652" type="application/x-shockwave-flash" allowfullscreen="true" width="400" height="300"></embed></object>
http://www.facebook.com/?ref=home#!/video/video.php?v=1924781994652

we even put it on an airchair using the suction mount.

<object width="400" height="300" ><param name="allowfullscreen" value="true" /><param name="movie" value="http://www.facebook.com/v/1924747233783" /><embed src="http://www.facebook.com/v/1924747233783" type="application/x-shockwave-flash" allowfullscreen="true" width="400" height="300"></embed></object>

http://www.facebook.com/?ref=home#!/video/video.php?v=1924747233783

http://www.facebook.com/v/1924747233783"

have it on my placecraft at over 100  = you tube dsantana 3-  one shooting forward one shooting backward

I talked to a drag racer one day about   go_pro mounts...he said he had one at 180 mph on the wing of his dragster and it stayed

ya i sold the old boat. i have not seen iton the water yet. but he is in this neck of the woods. i would like to see it again.

My suction mount holds on fine at 70. my boat wont do 100 so i dont know. i bet itwould be fine though. i use it on my dunebuggy and that is a hell of a ride sometimes.

Thanks for all the responses , it seems the suction cup should do it.
We'll see if we can pick one up before Big River.

Danny