When Gerry Adams signed on to the Northern Ireland peace deal at Easter, cynics muttered darkly about the fate of Michael Collins - the Irish Republican leader whose compromise with London during the '20s, earned him a bullet. But Adams yesterday persuaded 331 out of 350 delegates at Sinn Fein's make-or-break conference on the issue to back him up. While some Republican "hard men" underlined their intention to fight on by launching mortar attacks on police even as the Dublin conference deliberated, plenty of them - including some convicted bombers freed temporarily to attend the conference - opted for the peaceful road.