With jockey Edgar Prado aboard, Graham Motion-trained Grey Beard worked five furlongs Monday in 1:02 4/5 over a Gulfstream Park track labeled "good." Motion said Grey Beard galloped out six furlongs in 1:17 as the son of Unbridled's Song turned in his final work in preparation for Saturday's $200,000 Fountain of Youth (gr. I)."It was a good work," trainer Graham Motion said. "I got him going out six furlongs in 1:17. He's really not a flashy work horse but I'm very happy with the way he worked this morning.""He handled the track okay and went very well," Prado said. "He should run very good on Saturday."Equipped with blinkers for the first time, Grey Beard won a Jan. 9 allowance, beating eventual Hutcheson Stakes runner-up Monthir. "I really liked the way he gutted it out when he won his only start at Gulfstream. He fought back when that horse brushed him in the stretch and I thought it was an excellent effort. It was his first time with blinkers and they really helped. He's become a much more aggressive horse since I put them on him. I couldn't be happier with the way Grey Beard is coming up to the Fountain of Youth. I guess on Saturday we'll find out just how good he is."The wet track surface led trainers Ken McPeek and Shug McGaughey to put off works for their respective Fountain of Youth contenders Harlan's Holiday and Maybry's Boy. Both horses are now scheduled to work out Tuesday.