[Paddlewise] glueing kneepads into my canoe

I am a relatively new canoeist and have run into a problem gluing kneepads 
into my Royalex Mad River Explorer - any advice would be appreciated.

I bought a couple pairs of minicell foam kneepads [Voyageur] that have 
self-adhesive sheets. Put them in last fall, no problem.  This year, they 
started falling off when the canoe had been on the car for a few hours or few 
days.  Voyageur said they had a bad batch of adhesive, replaced them.  New 
ones did the same thing.  

Scraped the loose adhesive off, and glued them on with Mondo Bond.  Everyone 
thought that should have done it, but they still pop off...not right away, 
but after the canoe [dark color] has been in the sun on the car.  I figure 
the canoe and the pads are just shearing apart from thermal movement of the 
hull, but don't know what to do next...

I have successfully glued in several D rings with Vynabond vinyl adhesive and 
they're 
solid, so I know that it's not just because I'm a doofus who can't prep the 
surface and put two pieces together.  The glue - either the self adhesive or 
the Mondo Bond - mostly stays on the hull, and the pads that come off have no 
adhesive to speak of on them.

Any ideas?  Do I need to prep differently for Mondo Bond or something?  
Why wouldn't the Mondo Bond adhere to the pads, even though that's 
specifically recommended for them?  Should I use Vynabond to glue these in, 
or some other adhesive?  Does anyone know if Vynabond would work with the 
minicell pads?

Also, I have a nice coating of adhesive residue on the hull now... any 
suggestions for removing this adhesive that wouldn't damage the Royalex?
 
If you see kneepads bobbing down the Colorado like corks, they're probably 
mine....

Thanks for any pointers,

Bill Lukes
970 920 6929
wclukes_at_cs.com


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