I won't say I'm 100% sure but somewhere around 97-98 they switched from rivited .07x to welded .100. I haven't heard much good about old rivited tracker hulls.
Anything that floats and gets you on the water works. I ran a rivited hull for 3 yrs and the previous owner also ran it with a jet for 8 yrs. A few welds and some transom work still works.