Welcome to Marlin owners from NE Indiana.
My experience with my Veridan laser in low light dawn/dusk/dark conditions the laser shines so to speak. In daylight not so much. If anything I would place the laser where you can use the sights.
My nephews and I looked at lasers for my brother who has very poor vision due to health. Plan was to mount a laser on one of his rifles and we would guide him in. They would work great indoors and low light but we had a hard time seeing them reliably in good light.