Protips from someone who just got 2493pt (Jam Ver.):
All you really have to know are those strats
Farm Cheesing: Place a low value farm, and keep passing turns until it hits 6
Farm Milking: After a farm hits 6, use a non-6 fire to reduce its value, and keep passing turns again
Unlimited Free Rerolls: Keep passing turns until you get the value you want
Also a bug report: You get a game over even if you fill the last space of the board with a bomb/fire which manages to open some space up (my 2493 run ended because of this)