Quick conclusion for those that don't care about my math.  (Note: If you want to see my math, I have attached my Excel file at the end of this post).  From Feb 10th until now the BDI and NASDAQ have been trading within a range of levels.  Normalizing data against these days to a formula I have developed, I believe the following valuations for this sector exist:
DSX (Value = 12.90, Selling at 12.35, 4.4%)
PRGN (Value - 4.07, Selling at 3.71, 9.8%)
FREE (Value = 0.88, Selling at 0.72, 22.3%)
NM (Value = 2.64, Selling at 2.27, 16.3%)
ESEA (Value = 4.32, Selling at 4.39, -1.5%)
EXM (Value = 4.72, Selling at 3.94, 19.9%)
SBLK (Value = 1.74, Selling at 1.82, -4.6%) - This also skyrocketed in the after-market due to a great earnings report, so my calculations are very skewed because most analysts were shocked at the earnings.
DRYS (Value = 4.04, Selling at 3.80, +6.4%)
GNK (Value = 12.98, Selling at 12.19, +6.5%)
EGLE (Value = 4.55, Selling at 4.59, -0.9%)
Understand that this accounts for the current NASDAQ and current BDI. Last year the BDI peaked around May/June.  Ifthe BDI/NASDAQ improve going forward, then this sector will also move significantly with those jumps.
But even at these levels, stocks like FREE, EXM and NM appear majorly oversold at present.  I plan on actively trading in this sector with a long view of selling in May/June.