The drop 1-mile south of Vieques is a good place to catch a tuna or mahi. There's often a well defined weed-line there. It's funny, we've trolled for days with Cuban yoyo's and a nice travel rod, and for some reason I always get the hit on the rod and reel.

Kinda like Baard, I use 100-ft of camo P-cord for the Cuban yoyo. I had 200 lb leader, so that's what I went with, about 6 feet. Also girth hitch a bungee cord in the rig where you tie off to the boat to soften the strike.