I do not have the money to go for methods like SN. Instead I've been considering what's the best choice of rope from a local DIY store. Unfortunately I don't have a good close place to do it, but I know of a couple railway bridges I could theoretically go for full suspension.
I've also tried to measure at which point the local train would be at it's fastest speed, but I do not believe this is the method I'll be going for as long as the previous method is available to me.
I'm guessing all that is somewhat of an effort.