Sci Angler Mastery Grand Slam Floating Fly Line
Tarpon. Bonefish. Permit. All in one day. All on one line. That’s the idea behind the Mastery Grand Slam, a fly line designed specifically to help you achieve one of angling’s most elusive accomplishments. With a short, powerful head the Grand Slam cuts through wind and turns over crabs, shrimp, and tarpon toads with ease. We’ve got the line. You just need the fish.
- Designed for demanding tropical saltwater applications
- Loads rods quickly, cuts through wind with ease, and turns over big saltwater flies
- Short, powerful head for quick casts to moving targets
- Overweighted by .75 sizes to load rods quickly; use designated line weight for your rod
- Overweighted to load rods quickly and efficiently
- Tropi-Core™ technology provides enhanced performance in saltwater environments
| Feature | Detail |
|---|---|
| Line Type | Floating |
| Application | Tropical saltwater fishing |
| Head Design | Short, powerful head |
| Weight Overload | .75 sizes over weighted |
| Core Technology | Tropi-Core™ |
FAQ
What makes the Mastery Grand Slam different from other fly lines?
The Mastery Grand Slam features a short, powerful head and Tropi-Core™ technology, which enhances performance in windy tropical saltwater conditions. It loads rods quickly and excels at casting to moving targets like tarpon and bonefish.
Is the line suitable for all types of saltwater fishing?
The Mastery Grand Slam is specifically designed for demanding tropical saltwater applications, such as targeting tarpon, bonefish, and permit. It may not be optimal for freshwater or cold-water environments.
Can I use this line with any rod?
Use the line with a rod designated for the specific weight listed. The line is overweighted by .75 sizes to load rods quickly, so matching the rod’s recommended weight is essential for optimal performance.



Anthony Abraham –
Fished in the Florida keys and it performed well in strong winds. The short head allowed quick casts to moving fish. Tropi-Core™ felt durable and the line didn’t tangle easily. Great for bonefish and permit.
David Black –
Used it during a tarpon season in the Caribbean. The line loaded fast and handled wind better than my previous fly line. A bit heavier than expected, but worth it for the casting performance.
Keith Avery –
Perfect for offshore tropical fishing. The floating action and wind resistance made a big difference. Casts were clean and accurate, especially when targeting moving fish in open water.
Connor Russell –
Good for beginners and experienced anglers alike. The overweighted design helps with rod loading, and the line stays stable in gusty conditions. Slight learning curve with weight matching.