I am trailering a Crownline 250CR on a tandem axle trailer and I am trying to find out how to mount my spare. I have purchased one of those u-bolts (largest they had) and it is not big enough. Any ideas? <br /><br />In addition, I purchased guidance rollers (to settle my boat on the trailer easier, and again the u-bolts to connect them are not big enough!<br /><br /><br />What other options do I have?<br /><br /><br />Thanks,<br /><br />Ronald