Policies aren't the important bit
UKIP may well have some sensible policies (it would be difficult not to accidentaly let one or two sneak through in the middle of the batshit crazy ones) Problem is the party is full of stupid, pig-ignorant, racist bigots, who couldn't be trusted to implement any policies, sensible or not.
A word of advice: even if they have a policy of creating global peace, the elimination of disease and hunger, and education for all, don't vote for someone who is frothing at the mouth and wearing his or her underwear on their head.