Preheat oven to 400 degrees. Use fork to poke holes in pie crust, and bake for 10-12 minutes. When done, let cool for at least 15 minutes,
Drain the pineapple well, reserving 1/4 cup of juice.
Combine the crushed pineapple with the 1/4 cup of pineapple juice and the lime juice in a blender. Blend until very smooth, and the pineapple is no longer chunky.
Add the pineapple mixture to the Eagle Brand condensed milk in a bowl. Stir in the coconut extract, salt, and lime zest.
Pour mixture into pie crust, and place in refrigerator for 3 hours to set. Alternatively, pie can be frozen, and I found that I it seems more like Dole Whip when frozen. If freezing, remove from freezer about 20 minutes before serving.
Pour cold heavy cream into glass bowl and mix with beaters for about 4-5 minutes until it becomes thick. Note that heavy cream will not whip properly if it is not very cold or if using a metal bowl. Add the sugar, and mix for about 30 more seconds. Pipe the whipped cream on the pie.