Re-connect the bow strap and give a few turns on the winch to be sure its good and tight.
Trailer pontoon motor up or down. On smaller trailers you can lift the trailer tongue to make sure its tight on the ball. The guy up the street from me has a center console ocean going Grady-White on a high EZ Loader triple axle trailer that provides around 18 - 24 of clearance but its a BIG rig and not something a Bass angler. You should also never allow someone to tow you if your top is up.
When towing a pontoon boat you must always ensure you have trailered your boat securely. My Johnson had a lever on port side of motor. If there is no movement between any.
There is no transfer to the cross member. Because pontoon boats are not fast people often overcompensate with large motors or even more than one motor. Then sit down and do a bit of math and see if your pontoon plus trailer weight falls under the legal limit.
You will also want to make sure that you take down the top of the pontoon in high winds. If you feel yourself nodding off either switch drivers. If the engine has a flushing port you can hook up the garden hose turn it on and with the engine tilted up let it run for 5 10 or 15 minutes or as long as youd like.
As with any long distance car trip stay awake and alert. All outboards have them some of them operate differently then others. Be aware of situations where you may need to drive below the limit such as winding roads or windy conditions.
Tandem Axle 3500lb each. Then re-connect the safety chain and youre ready to pull the boat out of the water. Find Pontoon Boats and Boat Trailers for sale.