I don't have a spibelt but I do use a Lock Lace for my bibs. I just put one of the end pieces on one end of the lace, string it thru one of the bib holes, wrap it around my waist, put the end thru the other bib hole, then put the other end piece on and tighten it. Then cut off the extra lace. It is super simple and cheap. I have Event Clips which are similar to Race Dots except they snap together thru your shirt instead of a magnet but they are a PITA to get on, let alone get them on straight! Then I saw someone post about the Lock Lace and I have used it ever since.
Also, you can never post the HP Beagle pic too often. He is adorbs!