For the last few inches, I used ratchet strap to pull the tube tight until rear bolt holes lined up. This was on Hurricane 640. attach strap webbing to the inside tube strip where bolt holes are, I used 2 washers, one on top, one on bottom, and pinched it all together with ViceGrips. Anchored ratchet hook on the transom eyebolt, and ratcheted the tube into position with few clicks. Basically, make sure you protect the hypalon when pinching it together with webbing strap, so nothing gets damaged. Easy does it, but it needs certain pull strength in order to move the tube all the way to the back. One side at a time...