Many people use all webbing and don't mind the extra weight and bulk especially if they canoe or car camp. Some don't trust the small diametre lines whereas others prefer the ease of set up with cinch buckles.
Since you really only need webbing on one side (far side) of the tree you could even go as short as 2 to 3 feet depending on the size of trees you will be encountering.
One way to eliminate tree straps is to put your line around the tree and place several trail sticks evenly spaced between the line and the bark. This works to distribute the force of the line so the thin line diametre line will not damage the cambium layer under the bark.
Don't let life get in the way of living.