i received a few thornless raspberries last year and threw them in a bed i had prepared for blueberries. they have absolutely taken over. i definitely did not stake them properly. i've read about driving t-posts and running heavy wire... my question is this. they are planted at the end of the bed, should i extend the bed to the left of the bushes, move them, or just do the t.posts, but have them come up and veer to the right?