our 2015 RL-38 is 43' long . You will not have any issue with finding places you fit. Some state parks maybe the exception. If the parks claims a 40' fits we have fit in without any issue and had room to park the truck across the front or beside the RV.
Typically the pin weights are MUCH higher than the factory has claimed also. To get a rough estimate of pin weight take your trailer GVW and multiply it by 23%. 16,500 lb GVW X 23% = about 3800lbs pin weight when your loaded to travel . just make sure you have enough truck (pay load) for this , one ton single wheel truck is maxed out for sure.
Mark & Melissa
2015 Redwood RL38 , Kodiak disk brakes , 17.5" tires , 8K Morryde IS , 2024 GMC 3500 DRW