I have looked at plans for a steady rest because the last walking stick I made kept whipping all over the place. I've seen designs with string and ones made out of metal or wood. Some are square shaped, hexagonal shaped and circular shaped. Is there a version that is considered to be the ideal because of its strength, versatility or accuracy? If you have made one of these but found them to be inadequate in some way, could you please mention why it was inadequate and what strengths the particular design you chose had.