I'd like to knit a hat for my mom, but the circular needle I have is too long at 24", so I can't join the round. I have a pair of double-pointed needles, and I think I can easily knit the hat on them, but I'm wondering if this would alter the gauge somehow, or mess up the pattern? Aren't double-pointed needles and circular ones essentially the same, in that I can use them to achieve the same results? Sorry, but I'm a bit confused! Not to mention broke, which is why I'm hesitant to go out and buy another pair of circulars!