I do em the hard way,6' 4" fits in the Ford short box,borrowed truck would be a drag,one more thing to worry about.ANY kind of hill advantage,even mere inches, makes a big difference.Mostly birch around here,I prefer 6-10",proly 80-110 lbs.I yard out tree length,with block n tackle with truck,then buck to 6'4" to fit the box.
I hate the big b*st*rds,2 days ago couldnt say no to 12-14",they're easily 180lb+,but as a deceased family friend once told me"Dave you've got to strike while the irons hot"(depression era missouri farm boy twang required).
when it comes to muscling around,i use a trick I learned from halibut fishing,what we used to call a tail strap for moving the big mommas.Short piece(6' including the 1 loop end) of 3/8" line,although I think 1/2 or 5/8 would be easier to grip.
Ya got to think egyptian tech:rollers,gravity,tail strap,whatever it takes to get it to the truck.When Im close to the truck I like to pick up the end of the log(closest to the truck and slide it over a small roller,park one end of the log right before the tailgate.Leave your tail strap on that end,walk over to the other end of the log,which is now sitting on the roller(4-5 inch diam short section of log).
That lil 5" will give you a BIG advantage,stand up the log on end,balance,grab the tail strap @ the other end,get down close to the loop end,stand up/flop the top down/pick up on the strap.Log is pretty much over the 1/2 way point and in your truck.
Work smarter,not harder.Big ones on the bottom,lighter on top,birch is fairly heavy,but probably lighter than your hardwoods.When you get to any spruce,smile and throw them around like toothpicks.
Cant wait to afford a 35-40 horse tractor,oh man living will get good.
Id rather throw logs around twice(loading/unloading) than bucking everything up to firebox length at the work site and loading into the truck.Thats a whole lot of up-n- down for a load of wood,prefer to split the work over other days,but thats just me.
ak4195