Hard starting issues

I sat in the marina this weekend and ran the engines, ha ha, because there was no need to venture out onto the Tennessee River in the pouring rain. Problem is, the motors don't want to start very well. I've checked fuel filters, the ignition points appear to be properly set becuase once started, everything works well. Several guys came over and listened to the motors running, they sure sound good under the roof of the marina. Very few people were actually going out this weekend, most of the action was right in the slip.

Any tips on the starting issues?

Thanks,

Howard