i have both guideline 3d's and sa triple density lines . i like the guideline lines better for cast - ability , but they are hard to get stateside . the sa lines work just fine . medium to smaller flies work best for me . you will need to develop a method for pulling the lines up at the end of the swing . see henrik mortensson . i use 4/5 ' of fluoro tippet . also , when i first used them and wasn't used to them , i had my whole line wrap around a boulder and lost the entire head ! don't go to heavy or deep with them . remember that with a full sinker once the line is in the water there's no mending . i would also note that there was a link posted somewhere here on sp a while back where travis johnson talked about his clients using full sink lines and missing fish that were subsequently caught by clients using floating lines with tips . he felt that the sinking lines were going too deep . i use my lines for gl steelhead and sometimes smallies .
thanks , jim
Sinking lines get too deep! - - - - When your using the wrong one! ! ! ! or you've bought the one line and expect it to do all.Sink tips are no different here, use the wrong tip and you wont get results(or very rarely).
Tips are fine.polys. 15ft multi tips or tips of various T stuff, easily changed and you can buy a bucket full of them to stay flexible(if you so want to),however they are all influenced by the big fat floating Skagit line that you've used to get it out there!.Currents are frequently faster on the surface than down close to the bottom, the faster surface layer will often drag the floating Skagit line round quicker than the tip, pulling your flee round quicker and just possibly ruining your presentation.
What you all term "Scandi" heads come in all sinking rates from hover that will barely sink sub surface to hellish fast quick sinkers of 10 ips +.
If you don't want your flee on the bottom, then pick a tip or head that won't put it there, simple!.
Once a Scandi Head gets in and down, yes you cant really influence its swing other than to speed it up by handlining,however it will travel slower as there will be a lot more line down deep in the slower currents and very very little other than the running line that will influence its travelling on the surface,as its travelling slightly slower it will achieve more depth!.
One of the advantages of using polys. off full sinking heads, is that you have a degree of flexibility in utilising a poly that sink's the same or a bit faster than the line, allowing you to fine tune to suit the water/conditions.
As for "digging" the line out at the end of the swing, well a downstream roll cast initially will get the line up top, if the winds right a Double Spey will also do the trick or a slow rhythmic waggle of the rod tip after stripping in the running line as you raise the rod will also see yer flee pop up on top.
As ever horses for courses and all that, a little practice too.But to say it can't be done ?, er well go stand in the naughty corner because it can and its easy!.
I use both sink tips(15ft tips and polys.) and full sinking heads rather a lot, the trick is in picking the right one for the day and the water, to say one is better than the other is nonsense, don't limit yourself-keep your mind open.
My favourite way of fishing is a Hover/Inty line with a slow poly. for spring fish, gets about 18" deep and swings nice n slow when a rivers carrying a drop of snow melt and the fish are running.If a sunk line presentation is required,I'll frequently make up 2 rods, one with a dedicated full sinker, another with a proprietary multi tip line so I can chop n change to suit or look for the best return.
Just because there's a requirement to get down a bit,dosen't have to be down n dirty!