These types of pits tend to be more conducive to an anglers success than the less defined smaller pits. I am also of the assumption that sandpits lead to more situations where the larger gamefish suspend. Of the fish I have caught in sandpits during bright periods, the casts which produced them where directed towards open unobvious positions of open water. A few more casts to these unobvious positions resulted in a few more fish which had to be suspended over deep open water. Crankbaits and spinners are the most common and probably the best options to use in sandpits which have no other structural elements other than the primary drop offs.
Persistence pays off big dividends.
Keep those lines wet. Until next time.