I know that the Mack Pack can be done for either loose footed or attached foot 
mains without modification to the sail.  Mine (loose footed) has slugs that go 
into the boom track.  I think the other version straps under the boom.  Dave

Dr. David Knecht
Professor of Molecular and Cell Biology
Core Microscopy Facility Director
University of Connecticut       
91 N. Eagleville Rd.
Storrs, CT 06269
860-486-2200

> On Dec 10, 2015, at 9:16 AM, Josh Muckley via CnC-List 
> <cnc-list@cnc-list.com> wrote:
> 
> Mike,
> 
> I can't see anything that sets the stack pack apart from any other sail pack 
> or any reason that the main would need modified.  I looked and looked at the 
> Doyle website marketing (videos and text).  The only thing which seems to be 
> "needed" is a loose footed mainsail.  Even that might not be mandatory. 
> 
> What are you seeing that makes you think otherwise?
> 
> Josh Muckley
> S/V Sea Hawk 
> 1989 C&C 37+
> Solomons, MD
> 
> On Dec 10, 2015 8:55 AM, "Hoyt, Mike via CnC-List" <cnc-list@cnc-list.com 
> <mailto:cnc-list@cnc-list.com>> wrote:
> I was looking at the Doyle Stack Pack information on their web site.  It 
> indicates that an existing sail can be converted to a stack pack sail.
> 
>  
> 
> Persistence came with lazy jacks (since removed but still available for 
> reinstallation). Also have an older UK Tape Drive main as well as an almost 
> new Quantum main.  This past season we used the older main for deliveries, 
> everyday sailing and Wednesday racing and kept the new main for regattas etc 
> …  Had noted a friend with aFrers 33 has a Doyle Stack Pack for deliveries 
> and casual sailing and it has good enough sail shape for limited racing as 
> well.  Have been considering a stack pack main at some time for cruising.
> 
>  
> 
> Has anyone here converted an existing sail to a stack pack?  Any thoughts on 
> feasibility of converting an older UK Tape Drive to stack pack?  Any ideas on 
> cost and if at the end of life for that sail the stack pack components can be 
> used on another sail?
> 
>  
> 
> I know that the previous season we found the lazy jacks a pain that were 
> always in the way and that last season with just two of us flaking the main 
> was a major PITA esp when entering a narrow channel or looking to anchor. 
> 
>  
> 
> Thoughts?
> 
>  
> 
> Mike
> 
> Persistence
> 
> 1987 Frers 33
> 
> Halifax, NS
> 
>  
> 
> Formerly
> 
> Nut Case 1987 J27
> 
> Full Tilt 2 1979 Hinterhoeller Niagara 26
> 
> Monkey Bear 1974 Paceship P23
> 
> Full Tilt 1970s McVay Minuette
> 
> Blue Horizon No. 1 1981 C&C 36 (family boat)
> 
> High Hopes 1979 Spirit 28 (family boat)
> 
>  
> 
> 
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