Welcome to the Aruba Bonefish Club
An 8wt is a fine rod for the task. The coastal bonefish were very willing to grab just about any fly that had the crazy charlie / gotcha design. However I could not get them interested in an unweighted snapping shrimp pattern.
I would recommend sight fishing around the wreck at Malmok in the brightest part of the day in the shallows to the right of the ship, and in the evenings and mornings looking for tailing fish in the very shallow flat in front of and to the left of the ship.
Also, if you have a car head down toward the Balashi brewery and find the Barcadera beach area where the locals launch boats. There is a fine flat there to be fished just before, during and the start of the incoming tide.
I had fun with jacks down on the big crescent beach near the prison down on the Baby Beach road.
I wouldn't go there just to fish, but if I go there again I will definitely continue the pursuit I started last year.