That is the hardest thing do, I spined a doe last year, she jumped the string and when she lowerd her self my arrow cought her in the spine,, I use a climber too and I know it takes a bit of time to get down, I took my second shot from my stand, put it right through her heart, nice and quick.
I only hope you never have to make that second shot, its alot harder than the first one. now when I shot I always aim just a touch low.