LF Boots on other Boards

Hey guys, did some searching and I couldn't find the exact answer I needed so here's an easy one that you can help me out with.

What's the issue with putting Liquidforce Boots on other brand boards? Is it simply that the bolts are longer? So if I purchase LF boot and put it on a cwb can I just get some washers to make it fit?

Also anyone got any feedback on the '13 Ultras or Bobs? Looking to get back into the OT game.

Thanks