I use an Echo SR-4016 (4 wt. switch) to push large bulky ungulate hair and petrochemical flies through strong summer winds for trout. Works well for charr and even small steelhead. Would guess that the G Loomis IMX Pro 4 wt. is similar in action.
My favourite line is a Nextcast FF 35 330 grains. I rarely use a sinking tip (<1%) but it casts those well too when looped onto a compact Scandi head. Echo describes the Echo SR as medium-fast. With the FF 35 head, I can load the road right into the handle.
The set up is most flexible. From single-hand overhead casts at your feet to effortless single spey and sustained anchors casts to 2-hand overhead casts for in-the-face 20 to 40 km/hour winds. In effect, some of the time, I am casting with just the tip, most of the time, I am speycasting by loading the middle of the rod and when called for, I can access extra power in the lower end.
This outfit beautifully casts chironomid presentations (e.g., an 18 foot long leader/tippet combination) in a stillwater situation. As I am relatively new to using a 2-hander in ponds and lakes, I am constantly but pleasantly surprised at how little physical effort it takes to cast and present the fly. A 3 wt switch is on the shopping list.
A comment on distance. I used to care about distance when throwing shooting heads on single handers in a boca-type situation but these days as 99%+ of the flowing water trout angling is on or in the surface, I would rather hook them relatively close and not so far I have to squint to see the rise. That means taking large flows and dividing them up into small streams and avoiding the temptation of reaching for the middle of the river.
Good thread; looking forward to more 'yet another trout spey threads'.
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