Sharkhide and lift guides

[Malibu]

Only have had boat a week and noticing small scratches in sharkhide from lift guides.  The guides have canvas covers over syromfoam tubes.  Any solutions?   Thinking maybe I need to remove covers and try that. 

 

[ILLINOIS AVE]

Sharkhide is self etching. So maybe by applying a new coat of Sharkhide over the old it might blend in ? And remove covers!