Trock would probably be the choice but Bull is a great lake and much better than some think. The last week of March or first week of April would get my vote. Sometimes a little later in April when they start to make their beds and roam the pockets it can get a little tough. I prefer the straight up prespawn and you can catch them on a variety of patterns...jerkbait, blade, wart, jig, grub, etc. Also, I prefer the Baxter to Indian Point area because you have a good chance in that stretch of catching all three bass species. Just keep checking this board leading up to your trip and you will get plenty of info.