I've always found sliders to be a pain, expensive, heavy, take up too much room, and bind when you need them most. But that is just my opinion. I've always had short beds (6.5'). My first 2 5vers I pulled with a regular hitch and they both had flat front caps. Yes, could have hit the cab, and you always have to watch out when turning, but I got by. Then I started using sidewinder hitches, love them and I don't have to watch the corners any more. So you have several options. I would suggest trying the free hitch, experiment with backing at angles and then decide. Enjoy the new 5ver (if you get it). My son pulls a TT with his Tundra and is looking at 5th wheels. My advice to him is to get more truck. The next rig is only gonna get bigger
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Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD Duramax
Reese Fifth Airborne Sidewinder