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True Ames
Boomerang
The Boomerang is a thruster set drawn by Jeff Grennan out of San Diego's glider and mid-length scene — minimal area, heavy rake, built for trim speed and glide.Sold as a set of three in solid fiberglass, FCS compatible, in green, yellow, blue or smoke.
★★★★★5.0 (1)
In Stock
$128.50
new customer discount · applied automatically at checkout
Fin SystemFCS
Color — smoke
The Fin
The Boomerang is a thruster set drawn by Jeff Grennan out of San Diego's glider and mid-length scene — minimal area, heavy rake, built for trim speed and glide.
Sold as a set of three in solid fiberglass, FCS compatible, in green, yellow, blue or smoke. The template is raked well back and carries little area for a thruster set, which is a deliberate trade: less fin in the water, less resistance, and a board that keeps running down the line instead of being held back by its own fins. It came out of the San Diego glider and mid-length culture, spearheaded and designed by local native Jeff Grennan.
How that reads
Rake pushes the fin's area back behind the plug, so a turn draws out long and the board holds its speed through it instead of pivoting and scrubbing it off. Taking area out at the same time leaves less to drag through the water: trim speed goes up and the board keeps gliding where a fuller set would bog it down. What this outline will not do is hold hard in the pocket or snap off the top. It wants to be surfed in long lines.
Who it suits
Gliders, mid-lengths and longer boards with three plugs, in surf worth trimming across. Surfers chasing down-the-line speed and flow rather than tight vertical surfing — and anyone who has found that a standard thruster set makes a big board feel stuck to the water. Skip Frye and Bob Mitsven are among those who have spoken for it.
Specifications
ConstructionSolid fiberglass
ConfigurationThruster — set of 3
Height4.27"
Base3.57"
Area11.06 sq in
Made byTrue Ames, Santa Barbara CA
Colors1 option
Price Range$128.50
AvailabilityIn Stock
From True Ames
The Boomerang has been praised by Skip Frye and Bob Mitsven, a fitting endorsement for a template born in San Diego glider culture and built around trim-line surfing.
Our take
Run it on a glider or mid-length with FCS boxes when you want trim speed and flowing, drawn-out lines from a thruster set. If you want tight, snappy, release-forward surfing, the Channel Islands Tri is the better fit; this set is for running the wave, not gouging it.
More About This Fin
The True Ames Boomerang is a thruster set designed by Jeff Grennan out of the San Diego glider and mid-length scene. The template combines minimal fin area with heavy rake. This version is solid fiberglass with FCS-compatible bases and shares the same outline and intent as the Futures-base Boomerang Tri. It is intended for gliders, mid-lengths, and other trim-oriented shapes with FCS boxes.
Similar Fins
Mentioned in the review — Channel Islands Tri · Boomerang Tri (Futures) — not something we carry.