Welcome to the yard cfreak!

I'd also agree the perfect solution to cutting things is a big heavy knife (DFLE is perfect!) to knock hell out of stuff and a small agile knife (SS4 or similar) for fine cutting, skinning and getting dirt from under your nails.. However if you only take one knife a 6 1/2 to 7" blade is ideal (S6, Basic 7 or ASH for the rich amongst us) as it can do everything; well sort of..

JYD #3 Poor, but still dreaming of a sage and black SOD CG...