Tom Watson shot a three-under-par 68 in the gusty winds at Hilton Head Island, S.C., yesterday to move into a five-way tie for the second-round lead in the $300,000 Sea Pines-Heritage golf tournament.

"This puts me in good shape," Watson said after his 36-hole total of 137, five shots under par over the difficult, 6,650-yard Harbour Town Golf Links.

At the halfway point of the chase for the $54,000 first prize, Watson shared the lead with four nonwinners: Tommy Valentine, Mike McCullough, Fred Couples and Frank Conner.

Conner, a former tennis pro, had an eagle-2 on his way to a 66 that ranked as the best effort on a day when the winds swirled through the pine woods and marshes of Calibogue Sound. McCullough had a 70, Couples 68 and Valentine a 69.

The next-best group, at 139, included Craig Stadler, George Archer, former Heritage champion Doug Tewell, former PGA titleholder John Mahaffey and the two men who shared the first-round lead, Buddy Allin and Mike Donald.

Allin and Donald went from an opening 64 to a 75. "The course played tougher and I played bad," Allin said.

Tewell and Mahaffey each matched par 71, Archer shot 69 and Stadler, a winner earlier this season, had a 70 . . .

Bert Yancey, who attempted a comeback on the TPA tour this season, has been hospitalized on Hilton Head. Yancey, 43, a resident of the resort island, left the pro tour several years ago. He has been diagnosed as a manic-depressive.

Officials said Yancey exhibited erratic behavior before he was scheduled to tee off in the first round of the Sea Pines-Heritage Classic early Thursday morning, was escorted from the course and released to the care of his physician . . .

In Kaanapali, Hawaii, JoAnne Carner shot a three-under-par 70 for a two-round total of 144 and a one-stroke lead over Nancy Lopez Melton and Jeannette Kerr in the $175,000 LPGA Kemper Open.

According to Carner, her score could have been much lower. On the first hole, a 30-foot eagle attempt lipped the cup and failed to fall. On the 12th, 13th and 14th holes, she had birdie possibilities but poor pitch shots didn't allow her to capitalize.

Defending champion Pat Bradley and former U.S. Open winner Amy Alcott were at even-par 147 with Betsy King and Joann Washam.