I've used Monic's clear fly lines in the Bahamas, the Keys, and elsewhere since they first came out. I love them. For one thing, you can get by with shorter leaders which can make casting in the wind a lot easier. The biggest problem you'll likely encounter if you're fishing from a boat with a guide is your guide complaining he can't find your fly in the water because he can't see the line. The truth is that seeing the line in the water is easier from the front casting platform than from the poling platform due to the angle to the water. You also have three different line profiles to choose from with Monic. For years I used the original Tropical Saltwater and loved it. Then they came out with the Tropical Phantom with a slightly different profile and with a high visibility color added to the line after about 15' so that the line is easier for you and the guide to find in the water. Recently they came out with their FST (Fish Specific Taper) which has a special Bonefish taper that improves presentation with a more gradual profile. I use both the FST Bonefish and the Tropical Phantom for bones. I also bring another line (these days usually a Monic Backcountry-which is a pale blue) that I use if the guide gets touchy about the clear lines. The one criticism of of the Monic lines that I've heard is that they aren't real durable. That's probably true, but if you can afford to bonefish enough to wear one out quickly you can afford to replace the line periodically.