How do you fit a jockey wheel to a boat trailer?

Is it a bolt on or weld on. Was it made for that trailer or a universal with the weight of trailer and boat in mind? Is it a folder or a fixed tube? If it is a bolt on, replace all mention of welding with tightening the bolts. Also please remember it is in the instructions about the 'degree of tilt' you should have. 1) Connect the trailer to the tow vehicle and park on a smooth flat concrete workspace.

2) (If this is a folding unit you can skip this step.) Fully retract the wheel. Locate the approximate placement of the wheel on the trailer, hold in place with vise grips, C clamps or by slight tightening of the bolts. Measure from the bottom of the wheel to the pavement and ensure you are 12" from the pavement (your state laws may vary on this requirement, no less than 12" is recommended).

3) (If this is NOT a folding unit you can skip this step.) If this is a folding unit ensure that the unit will fold into storage position without interfering with the boat, trailer, trailer wiring, or tow vehicle. Also ensure that the crank for operating the wheel will not interfere with the same.

4a*) Extend the wheel to ensure it has enough travel to touch the ground plus 6"; if not and it is 12 inches from the ground the extension of the wheel is not long enough for this application (6" is required to lift the boat from the hitch receiver, depending on weight and suspension of the tow vehicle).

4b*) Place a jack stand under the hitch near the tow vehicle, lift the trailer using a jack set back from the hitch and wheel, ensure that the receiver clears the tow ball; extend the wheel and make sure there is travel room left to lift it higher than this point.

5) Tighten the U clamps / weld the plate / drill and bolt; the wheel in to place at this point. * Note: for proper storage of the boat, the wheel should be able to lift the boat past the horizontal line needed for water to flow from the boats drain plug; see boat manual about this measurement and adjust step 4a or 4b as necessary. WARNING. At no time should you use the new wheel jockey by attaching it to the lift tube of an old wheel jockey failure of the lift tube will result. All warnings about driving, weights and such are included by common sense.