No problem. When you remove the old bumper, you will be amazed at how little material attaches it to the sled. Two little pieces of bellypan plastic is all you are lifting with.
I learned about the bumper when watching a guy try to help his buddy. One of the sleds lost it's brakes, the other guy tied a rope to his bumper (05 900) and slow the first guy down on the long, steep hill we had to come down. About 20 feet into the ascent, the bumper tore loose and down the hill the first sled went, at Mach 2. Scary, to say the least. Then a couple of years when I was out riding with another guy, he was helping lift my sled out of the snow. He had an identical sled to mine (07 700) and before I could stop him, he tried to lift the front by the bumper. Yep. You guessed it. Tore it right off. Was a very stressful moment for the other guy, being as he had just come to work for our dept. and I was his boss
I should have let him sweat a bit.. but naa... I let him off the hook pretty easily. I already had the Skinz in the garage