[Salmon Candy]

Does any line manufacturer make a double taper sink tip line? Scientific Anglers did many years (decades) ago, but I haven't seen one for some time.

 

[Calvin1]

I can't get my mind around how that would work. If you had a sink tip on both ends of the fly line, how would you cast it?

 

[David Loy]

I ebay purchaced a Hardy Marquis/Salmon #4 reel from a gent in Scotland a few years ago and it came with an 11 wt DT sink tip. I use the reel for spey but have never used the line. The Brits do a lot of things we don't. This guy fished it in Norway for salmon & maybe sea trout. I am fond of DTs and can easily imagine that mending (to the sink tip) would be easier than with a WF. Presentation & control.
I believe the line was a Hardy also.

 

[Kent Lufkin]

I can't get my mind around how that would work. If you had a sink tip on both ends of the fly line, how would you cast it?

Just like a regular line. Since it's a double taper, one sinking tip will be on the end you're fishing with while the second one would be attached to the backing and wound onto your reel spool.

Edit: I believe the OP was referring to a DT sinktip line, a normal floating line onto each end of which were seamlessly grafted tapered sinking sections. Please correct me if I've misunderstood, but I don't think he was referring to attaching a separate sink tip (the loop to loop add-ons that many steelheaders use) on each end.

K

 

[Anil]

Until very recently teeny made a version of their Mini-Tip line that was a mini tip on one end and, a floater on the other. I believe it was called the tandem. They might have a few left, but when I spoke with them, it was no longer being made.
It wasn’t a traditional double taper, as it was really to weight forward lines joined in the middle.
Anil

 

[Derek Day]

I think the teeny lines were however weight forward and/or shooting heads connected by a thin running line. Out of curiosity though, why are you looking for a DT sink tip?

 

[Salmon Candy]

i like the way they cast and they are a super bargain. When one end wears out, simply reverse it and it's like having a new line.

 

[c1eddy]

Here is one that sold on fleabay recently: http://cgi.ebay.com.my/ws/eBayISAPI.dll?ViewItem&item=200415783571&ru=http%3A%2F%2Fshop.ebay.com.my%3A80%2F%3F_from%3DR40%26_trksid%3Dp3692.m38.l1313%26_nkw%3D200415783571%26_sacat%3DSee-All-Categories%26_fvi%3D1&_rdc=1
EDIT: Upon closer inspection...I see it sold on ebay's Malaysia site.

 

[c1eddy]

Here are a DT7 and DT8 sink-tip for sale (located at about mid-page): http://www.flyfishusa.com/bargains/bargains-home/close-outs.html