The Scientific Anglers Mastery Trout GP Fly Line is designed for anglers who value precision, presentation, and all-around performance. Featuring a refined taper inspired by the Infinity series, the Trout GP Fly Line incorporates a slightly longer front and rear taper with a ¼-size heavy weight design. This results in a line that maintains finesse and control while still offering the power needed for a wide range of trout fishing techniques.
Perfect for anglers who don’t often throw heavy streamers or large indicator rigs, the Trout GP shines with dry flies, nymphs, small streamers, and poppers. Its AST (Advanced Shooting Technology) ensures effortless casting and superior durability, while the Welded Loops and SA•ID line identification make rigging and identification quick and simple. Built for cold to moderate water conditions, this line stays supple, clean, and ready to perform—season after season.
| S/A MASTERY TROUT GP FLY LINE | ||||
| Line Weight | Head Length | Total Length | Head Weight | Grain Weight* |
| WF3F | 49.5' | 90.0' | 160gr | 105gr |
| WF4F | 49.5' | 90.0' | 185gr | 125gr |
| WF5F | 50.5' | 90.0' | 220gr | 145gr |
| WF6F | 51.0' | 90.0' | 255gr | 170gr |
| WF7F | 52.0' | 90.0' | 300gr | 195gr |
| WF8F | 53.0' | 90.0' | 345gr | 220gr |
*Grain weight for first 30'
AST - Scientific Anglers’ patented dry-slick technology provides continual line slickness, allowing the line to shoot farther as it moves through the guides. Lines with AST easily shed dirt, algae, and other parasitic drag particles, allowing lines to cast farther, float higher, and stay cleaner than traditional lines
Welded Loops - Exceptionally slick and strong, Scientific Anglers' Welded Loops produce smoother casts and easier turnover with a seamless fly-line-to-loop transition, making for softer landings and cleaner pickups. The sleek design also maintains buoyancy for improved fly-line flotation and enables quicker connections between fly line and leaders or fly line and backing.
SA Line ID - Meet the Scientific Anglers Line Identification System. SA•ID is an innovative line-marking system allowing you to identify your lines at a glance. Wonder if a shooting head is 200 grain or a 300? Just look at the SA•ID. The SA•ID can be found on the first 1-2 feet of the tip section of your line.
