The Preston Off-Box one is very popular but as you have a Boss box try Fosters of Birmingham [who carry a lot of Boss spares] to see if they have one of the Boss feeder arms which in my opinion were the best ever – the only thing I did with mine to make it even better was to swap the long arm with a telescopic Octoplus arm to give even more height off the water when fishing flowing water but you don’t need to do that.

the fasteners on the preston are very unreliable mine lasted 1 minute.

Matchbox, Map carptec or Fox/Matrix all before Preston imo.

I’ve had a Preston off box feeder arm for about 4 years, can’t fault it.It can be positioned so easily, moved out of the way when pole fishing and it fits in my holdall with rod rest head attached.

try a matchcraft fishingtackle feederarm

bram

have the preston xs arm myself and it’s been top notch, have been using it for 3 seasons now and it’s still going strong with no signs of it failing anytime soon