You can use either the rope or the spray paint to substitute for the hose. I favor the rope as it allows you to easily fine tune the shape of the bedline without a lot of confusing paint markings :-)) One seldom gets it right the first time!!

Just make sure that any curves you plan are graceful and gradual in shape - not too many and with no squiggles.....if that makes sense ;-))

I'd second GG's warning about manic wiggles. Curves need a reason. Don't overdo them.

Thanks @gardengal! I also needed this information quite badly haha. :)