GANGLAND hardman Martin Foley has taken to his bike in a bid to dodge another assassination attempt. ''The Viper' is paranoid about car bombs and hitmen outside his Dublin home after 'Dapper Don' Christy Kinahan offered €60,000 to have him whacked. Each morning Foley, who has survived four murder bids already, checks for hidden devices under his car and is now cycling instead of driving himself. And the Viper is not the only gangland tough guy under siege this weekend. Violent mob boss 'Fat' Freddie Thompson is holed up at his mother's house after it was firebombed by rivals who want him dead. Thompson has even gone to the gardai looking for protection as the feud threatens to explode. Viper's Vicious Cycle MARTIN 'The Viper' Foley has been warned that his life is in serious danger after 'The Dapper Don' Christy Kinahan put a €60,000 bounty on his head.