Australian surf and snow wear producer Billabong International Ltd on Monday posted a 25 per cent jump in full year net profit from the year-ago period as it rode a strong sales wave at home and abroad. The company reported a net profit for the year ended June 30 of A$76.3 million versus A$61m last year with total sales up 24 per cent year-on-year to A$622.9m thanks to solid growth at key US client Pacific Sunwear of California.