We have all done it and I’m sure that there are loads more that are lined up waiting to do it. The dreaded power up with the gymble restraint still attached Or worse still getting airborne with it still fitted. I have seen many posts on here about fitting “Remove before flight or similar flags” However the damage starts when you connect the RC to the aircraft! So how about belt and braces? Next to the RC on/off button add a sticker that just says GYMBLE ?? Hopefully to remind you to remove it. And if you have missed that use the flag.. I worked for a company where our 737 got airborne with the undercarriage lock pins in. Quick flight around the airport dump fuel and then taxi in to remove said pins with big REMOVE-BEFORE FLIGHT flags...the crew had missed it...the dispatcher had missed it...the see off crew had missed it..and ATC had missed it..so don’t beat yourself up about GYMBLE restraints but do try to remind yourself before it becomes and expensive mistake.
Stay and fly safe
Stay and fly safe