Back then, 14 years ago, over the top with three nails (two on the side not shown and one on the over-the-top side shown) was all that was required.
Then they started getting into uplift loading and all (after Hurricane Andrew in 1992 (15 years ago) and by the 1994 codes had most of that changed.
14 years ago, though, would have required the three nails, one in that loose tail.
Now, though, I'd recommend the straps be 'nailed as required to provide proper uplift resistance' and 'which may be necessary to have a structural engineer review the strapping in question, and all strapping of the roof truss system' (meaning the structural engineer 'buys' the roof strapping issue from you
).
Where is the house at? 14 years ago puts it at 1993, which was right when almost nothing was going on other than rebuilding after Hurricane Andrew, especially in Miami-Dade County. Many homes under construction in 1992 sat for a year or two or longer before being finished or torn down, was that started in 1993? Unusual if it was. Did it sit open for a while? How long? trusses up and no decking? Decking? How many things were exposed for how long? That time frame just raises soooo many questions.