hi kent petersen,
welcome to the forum, and a warm welcome from Holland too. i looked for your sufix energy and found it to be suffix synergy. when i saw it i remembered it from my days working in the local tackle shop. indeed it was sold to mainly carpfishermen, i cant remember if it comes in clear color too. i guess you are looking for a clear monofilament that resists abrasion against rocks better, a hardwearing line so to speak, ill go and ask around for you.
if you would like to leave me a message, email@example.com
greetings and all the best for the new year