Ambitious to start off with a 40 footer! Practice and larger mirrors are two good suggestions. "Our" driveway suggests you have someone to be a spotter. Buy two walkie talkies. Borrow a small utility trailer and practice Monday to Thursday. Small trailers are more difficult IMO. Use mirrors only. You Tube is nice but not real.
Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad