UPDATE 1-McCain now has challenge of staying in public eye

(Adds foreign travel expected)

By Steve Holland

WASHINGTON, March 6 (Reuters) - Now that he has clinched the Republican presidential nomination, John McCain has to figure out how to remain in the public eye while attention is diverted to the tense Democratic battle.

The danger is that the epic struggle between Democrats Barack Obama and Hillary Clinton over their party's presidential nomination will dominate the news and turn McCain into a side issue.

It is a subject that concerns McCain's advisers, but they believe they will be able to keep sufficient focus on the Arizona senator while at the same time raise some much needed campaign cash and work on bringing the Republican Party together behind him.

"You have to be concerned about it," said senior McCain adviser Charlie Black. "But I think the answer is we have to go out and make news."

McCain told reporters in Florida "it's going to be more difficult obviously" to maintain national visibility "but at the same time it does give me an opportunity to go around and shore up our base of support, unite our party and energize our party."

McCain is planning a trip to the Middle East and Europe for later this month as part of a congressional delegation and will soon embark on a tour of places near and dear to his heart in an effort to re-introduce himself to Americans, including a stop at the Naval Academy in Annapolis, Maryland.

He is expected to give two or three significant speeches over the next couple of months outlining his views on national security, the U.S. economy and health care.