Taking out a Puma on Lutt Map
1) Sherman is preferred; for fast turret turns; turn tank with Turret
2) Stay to the East or West edges of maps; with one side (left or right) to the trees, wall, etc. (thereby blocking roughly 1/3 of your own tank from Puma fire (Puma can't circle around you)
3) When entering a new quadrant, field, or rounding a turn in the hedges... take a second to turn off the engine (switch positions) - and listen for enemy tanks (good speakers and/or loud earphones help). Listen for enemy fire from the larger bulky german tanks as well.
4) The closer you are to Enemy lines, the Puma will come to you. Turn off the engine, Keep your rear to a wall, and keep your distance from entrances, portals, and narrow access areas; which the Puma can pounce from. When he rounds the corner or comes through the narrow access breach - hit position 1, immediately followed by the gunsight key - follow target with turret and shoot.