Large water needs a large boat. Small ones might be perfectly happy zooming about a big lake, but they soon vanish. Little over 50 yards out, quite often the only thing you see is the rooster thrown up when it it travelling fast.
V hull, 31" long, capable of going fast, good handling and stability,
http://www.amera.co.uk/product.php?range=w has a set of mouldings that builds into a rather nice Huntsman (James Bond, Fom Russia With Love).
+1 on not swimming after a boat, better to have one that is less likely to flip.