From what you described, last year's results and Sandy soil, if you have already put the lime out this year, this coming season I would expect very noticeable results. I disk it in but with sand don't disc the lime too far down.. Soil test probably said a 2 tons/acre. Supposedly over 2 tons there is no results the more you add. Probably in sand it will recommend things such as boron in very small amounts. Consider getting those nutrients by using Rainbow fert. What I do is sample, lime this time of year, plant fallplot. The next following plot, I'd sample about a month prior and add any additional lime according to sample. Then sample every 3-4 years afterwards.