If you haven't read this article on what Archeological evidence is revealing about the fight at Pea Ridge, it deserves your attention.

Lessons from Pea Ridge, Combining Archeology, History, and Resource Management to Gain Greater Understanding of Past Events
http://www.civilwar.org/battlefields/pearidge/pea-ridge-history-articles/lessonsfrompearidgescott.html

I was particularly interested in this information about the position of Hart and Good's batteries.

Likewise archaeological recovery of canister balls at the northeast and southeast sides of Oberson’s field indicates that the opposing artillery were within canister range of one another, not firing blindly over a forested area as is often reported. This new information places the Confederate guns, probably Good’s and Hart’s batteries, on Foster’s lane near its juncture with the Leetown road. The finding of Confederate fired canister and the probable location of one or two batteries of Confederate artillery is new information that is not recorded in the historical record of the Leetown fight.