We often get involved with customers who are doing Pacific Cup race
. Many of these boats will carry a trysail. We install a 7/8" external track on the mast
. The preferred method of attachment is machine screws so we'll drill and tap the holes. Tefgel or Lanocote is used on fasteners to prevent corrosion
. The track is long enough that there is some flexibility with sheeting.
If I was setting up a boat that I thought might actually use a trysail for any length of time, I'd suggest to the owner that we use a better slide than the typical external slides. Here's a slide that we like that's made by Ronstan (part#PNP47E) - https://www.facebook.com/photo.php?f...type=3&theater
So why this fancy slide? We actually use these quite a bit on mains for boats with external track. They don't chafe like the regular slides and allow for use of wider webbing.
As an alternative to carrying a storm trysail, we can set up a main so it can be deeply reefed and handle the loads. Twin ply construction at the head
with large radial patches are combined with some extra reinforcement for the top reef. This is not something that is economical to do with an existing main but a consideration when building a new one.
Our thought is for the type of cruising most people do (in season tradewinds sailing), that a properly reinforced main with deep reef is adequate. Those venturing into higher latitudes or other areas with likelihood of encountering extreme weather
are best served with a trysail.
If a trysail isn't deployed before needed chances are it's going to be a challenge setting it. There's much to be said for working with the main that's already up.