Yeah, I left the hose in the boiling water like you did, I also had to have the fitting clamped somewhere so I could use BOTH hands on the hose. Wear some leather gloves (welding gloves work well) so you have a good grip on the hose and you don't burn yourself. Also, while the hose is soaking in the hot water, I put engine oil on the fitting barbs. Then I took the hose from the hot water to the fitting immediately, only a second or so between them. Good luck, you'll get it, once you get the first one then the rest will be quicker because you have the process down, but it's still a total PITA.
I use the razoer blade plier type cutters to cut the hose and it was a breeze to cut, I would cut the end of the house off if I didn't get it on the first try. Always start with fresh hose.
Also, once I got the end completely on, I would peel the rubber piece back, then take some electrical tape and wrap it around the end of the hose twice, and push the rubber back over it, I figured since it was not contained in anyway I did that to prevent it from fraying over time.