I like to rebate the decking rather than a "V" - it gives me more control over the width of the gap. When the deck is sanded, a "V" gets smaller and smaller, giving rise to the need to correct seams before sealing. The rebate remains constant with sanding. It also seems to be easier to fill it with sikaflex.
|Sipo Mahogany coamings ready to fix
|Sipo Mahogany machined for decking.
|The coamings are scarphed using recorcinol glue before fixing onto the deckbeams