Hi Mehmet,
First:
An Asymmetrical, gennaker, and cruising chute are pretty much all the same. A lot depends on who you buy it from and what they call it. They are basically spinnakers that are designed to be used without a pole. The luff and leach are asymetrical in length and the cut is not as full as a full spinnaker. These are usually handled with a sock, or even a single line furler.
A full spinnaker requires a pole and 3+ people to safely and effeciently fly them.
A reacher is a similair to a drifter or genoa, but designed just for reaching. Probably not something you would need.
Since going to Bora bora requires a lot of trade wind sailing I would recommend a drifter. You can use it upwind or down. For the downwind work I would recommend a whisker pole (Johns post above!) also. In the trades an asymmetrical spinnaker could be a lot to handle, and not work for light upwind sailing. If money were no object I would have both.
Have one built with a ultra low stretch luff line like Dynex Dux. Then set it flying (not hanked on). This way you can use it often even when you have roller furling.
Cheers
Gary Felton
S/V Shanti
US Virgin Islands
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