So after thinkin it up for the day I am sure I know what I did wrong, this is the first time ever for me driving anything bigger than my silverado. Ive driven all kinds of manual cars. In manual vehicles you wait a few seconds between gears to shift you have long gears compared to a tractor. In a tractor you shift real quick between gears. I was waiting to long and was way over 2000 rpms when shifting hence why I wouldnt shift into the next gear.
The sweet spot is where the motor runs the best while in gear, not where you shift. The shift range is the rpm range where shifting is easiest. Every truck is different. Sometimes it takes a while to learn what that is, also low range is usually different from high range. It sounds confusing but after shifting a truck a couple thousand times you'll figure it out. Take your time and pay attention to the tach.
Yes, car and pickup transmissions are NOT meant to be floated. Sure, you can do so, but its not good on the synchos. I once had my clutch cable bust on my Ford Mustang, so I floated it home and installed a new cable, but normally I dont do that in a light vehicle transmission.