Might want to try zig zagging once you hit the ground. It will bleed off speed and "add distance" to your runway. I use that approach sometimes when the wind has swapped directions in the middle of a flight and it looks like I am going to run out of runway. Just push the rudder from side to side and you will bleed off a lot of speed and slow down a lot in a shorter distance. May not be quite scale, if you're looking for that, but it will slow you down considerably if you start looking short on runway.