I don't know if you will get this before you leave or not.
I am not familiar with the lake at all. I have NEVER fished it, but I had a friend of mine tell me this evening that they have been tearing up the sac's over at Chicot. Something about them being in the trees in about 6 ft of water... Best bet is to follow the other boats.
As for the trolling motor, if they rent boats and the boats are not current on registration, I don't think you can put any kind of motor on them. But I may be wrong...... Good luck and let us know how it goes.