Casting with long mono leaders on a fixed spool reel - A hard mono that is wound onto the reel certainly presents challenges, primarily because of the rigidity and memory in the hard mono or fluoro carbon and then the absolute limpness and zero memory of the braid.
Hard or stiff braids are not ideal for casting off fixed spool reels and are obviously more geared at multipliers, but in the case of having to cast a long hard mono leader off an open face it can help a tad. The lighter the rig the less problems you will encounter. As the leaders get heavier the problem is accentuated. Casting long mono leaders off open faced reels is possible and has been done with lighter braids and lighter leaders. One has to be very careful though with the length. There are of course very soft and limp mono leaders that are available in the market and they are obviously a lot easier to use in this application, but whilst they offer limpness, little or no memory, invariably a lot of stretch, what they fail to offer primarily is abrasion resistance. The visibility aspect is debateable depending on the application.
The perfect length for casting is determined by the following factors :
1. The thickness of the leader and the braid that we are working with. The lighter it is, the easier it is.
2. The distance from the reel to the first guide and the size of the first guide; The bigger the first guide and the closer to the reel the easier it is. The lighter the braid, the further away and smaller the guide can be.
3. Ideally one should have the join just above the reel, in other words not wound onto the reel. This tends to keep the leader straight and the closer it is to the top guide, the easier it flies straight through. It is when it comes off the reel that the problems start.
4. The longer the rod the longer the leader can obviously be.
The knot that I have found works best here is a bimini on the braid, but not the very tight parallel ringed bimini, rather the cross-locked stretched out version. The tag end on the bimini is secured with a half-hitch around the one leg and then two half hitches around both legs. Use all three pieces of braid coming out of the bimini to form the join with the mono. Here it is necessary to first tie a Uni or figure of 8 knot with three turns on the mono going around the three strands of braid. Once you have tightened this up a bit, you can then use the three strands of braid (I normally cut the loop and then tie a Uni-knot with all three to hold them together) to tie another uni (either 2,3 or 4 loops depending on the thickness of the braid) around the mono and then one needs to pull the two uni's together and give both tag ends a good tug while it is up nice and tight. Tag ends are then trimmed very close and the UV Knot Sense helps to protect this a bit as it flies through the guides. In this case I find super-glue too brittle and it can lead to breakages where the flex starts on the braid. The leader knot then three strands then the long bimini help to guide the flight of the knot through the guides. A little bit like having the flights on the back of an arrow or dart. This obviously flies better than a thick mono leader with a short blob type knot and nothing behind it other one thin strand of braid to keep it from wrapping on the guide.