2008 Mobius hard starting

[08blackmobius]

I’m looking for some help with my 08 LSV with an Indmar assault. Last season it became hard to start, but always will start. Currently takes several tries and 10-15 seconds of cranking to fire up. Once running it runs great, no issues at all. If I shut it off it won’t start right back up.

I’ve changed plugs, plug wires, distributor cap and rotor, fuel filter, ran through multiple tanks of gas, and just replaced the alternator that tested bad. Also have 60psi of fuel at the rail.

I did notice the ignition switch needs to be jiggled a bit from time to time to get the fuel pump to kick on, but not every time.

Any thoughts? Ignition switch, coil, oil pressure switch?

Appreciate the help! Getting tired of trying to start my boat.

[Turbinesurgeon]

I’m thinking maybe it’s weak spark from a bad coil. Could also explain the hard starting after it’s been heat soaked.