My DH and DS just did this excursion this past week!
They have done the Bottom fishing excursion in the past as well and said the backcountry one is well worth the money and definitely more of a fishing experience than the bottom fishing excursion.
They started off by trolling. They only have 4 people on the excursion so I would suggest booking sooner than later but then everyone takes turns reeling in a fish when trolling. They caught a 41 inch barracuda plus other fish that I forget the name. Then after trolling they all start fishing by casting for bonefish. They came back and said this excursion would be definitely something they'd do again! My ds (he is 13) asked if this excursion ran in the afternoon too because he wanted to do it again.
They are very avid fisherman at home too so for them to say how great it was, I feel very confident saying its a great fishing trip