Front fender on a girder front end?

a buddy had a SBF (Smith Bros & Fetrow) girder and he made some square clamps like the round rubber mounted ones you show in the above pcture, but without the rubber, he used one on the front leg, and one on the rear and used a cut down stock fender that then bolted on as per the standard front and rear way of fitting on telescopic forks, no forward & back wobeling, it as solidly mounted and didn't have a long mounting strip again as shown in your picture above,this isn't a great pic of it but all i have of it, you can JUST make out the mounts,
but a bit fuzzy

Thanks for the tips, we got this sorted in the end using some billet (yeah I know, cough cough...) aluminium p-clamps around the girder legs. These were a lot thicker than the stainless rubber coated p-clamps (see original post), so hopefully they turn out to be a longer lasting stronger choice.

Given the legs are triangulated not parallel to each other, there's so way they fender can slide up or down the legs with vibration. I'll probably line the inside of the clamps with some electrical tape or something similar to protect the chrome when these are clamped in place for the final time.

I've hit the front fender with some grey primer and the fender brace/mounting section with some black primer and everything looks much neater now I think.