What are you going for? I made one earlier this year, and the coconut flavor was pretty heavy.
The coconut from the boil and mash added a nice nuttiness, the "dry coconutting" is what really made the smell and flavor come through. It was pretty strong, next time I'd cut back the mash and boil additions to 0.50 lb each, and the dry hop addition to 1/10 lb or less.
For a 6 gallon batch, 86% efficiency:
OG: 1.062, FG: 1.014, 60 IBU
Ingredient lbs
Two-Row (Canadian) 9.25
Munich (Light) 2.00
Wheat Malt (Toasted) 0.50
Crystal 60L 0.3125
Coconut (Toasted) 0.75
Hop (form) oz. time AA% IBU
Magnum (Pellet) 1.25 60 12.1% 39.13
Simcoe (Pellet) 0.25 15 12.2% 4.30
Cascade (Pellet) 0.5 15 5.4% 3.82
Simcoe (Pellet) 0.25 10 12.2% 3.15
Cascade (Pellet) 0.5 10 5.4% 2.80
Simcoe (Pellet) 0.25 5 12.2% 1.74
Cascade (Pellet) 0.5 5 5.4% 1.54
Citra (Whole) 0.5 5 12.0% 3.07
Cascade (Pellet) 0.5 0 5.4% 0.00
Citra (Whole) 0.5 0 12.0% 0.00
Cascade (Pellet) 1 0 5.4% 0.00 DRY
Citra (Whole) 1.25 0 12.0% 0.00 DRY
Added another 0.75 lbs toasted coconut at knockout.
Added 0.25 lbs toasted coconut with dry hops.
Coconut was toasted at 250 degrees for 20 minutes, enough for it to start to turn a light brown.
I used some home toasted wheat for this also. Toasted at 250 for about 30 minutes.