Good for you,Spirals are a completely different stoke to scrolling.You actually become a lot m,ore of the scrolling process.No time to blink now,No unnecessary moves ,it's all deep concentration ,That's actually fun.Not only will you be getting lots more isometric exercises moving muscles you haven't used but you'll be proud of your accomplishments doing so.Now and then i forget I'm using a spiral and make a boo boo,but you catch on fast enough that you can sail around it and do a quick patch up.Circles are the hardest so practice them lots.In fact every project i do is my practice project.