[Paddlewise] Extra flotation for a Klepper

I own a Klepper double.  I recently added end flotation bags from a canoe.  
Has anyone tried the large float bags from Feathercraft in a Klepper, or 
similar boat?  Is the material much different from other float bags on the 
market, durability, fit, and quality.  My canoe float bags fit pretty well, I 
think their from Voyager.  But I think the ones from Feathercraft are cut 
alittle different and will fill the end much better.  Also, I would like to 
hear from anyone with a Klepper Quattro hull or the add on sponsons.  With 
the addition of two more sponsons, is their a significant differnce how the 
boat feels?  I heard from someone that they thought that their boat acually 
felt alittle faster.  The only draw back they mentioned was that the 
secondary sponsons had to be inserted seperate, they were not attached to the 
hull.  You can purchase two different add on versions from the Klepper 
Service Center.  Does anyone know the difference between the Klepper Service 
Centers version and Kleppers, beside the price?
Jamy  
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