The Church of Double Clipping

[Refueler]

Double clipping is one mitigation of a hazard. There are other mitigations @Plum states one, the use of good quality clips.

Speak to your insurance company and get their opinion in writing about what you are proposing. Should you move away from 'best practice' they may not pay out on any claim you may have.

Last people I would consult is Insurance Co ( actually Broker ) .... why finish conversation with a long list of dos and donts ... why give them an excuse ?

For Ins to void a claim for this matter - the 'claimed event' would have to be attributable to the hose connection and clip.