Just noticed something else in the pics; it may sound like I'm being pedantic but take the oars out of the rowlocks and lay them inside the dinghy when you get out.
You would be surprised how easily the dinghy can swing around against the boat and the oar lifted out and 'plop'!! Never happened to me but I have rescued someone's oar who it happened to!!
Also by the looks of the close up pic of the backstay fitting, the rig could do with looking at.
My 3.3 Mercury, about 10 years or more old, starts and runs well every time, even after being in the shed for a few months.
I wanted to add my little bit but bugger me your guy's have covered it, damn, I will wait for the next victim...? 
dude. someone is pulling the wool over your eyes. hood 20 is wicked boat. rigging is fine! pull it up on a beach as far as you can at high tide. get a shovel and scrape the **** out of it. let the tide come in so fish can have a feed. stay night on boat as really good fishing! next low tide get batery grinder with 40 grit and grind all the bubbles out untill the fiberglass is dryish but dont be afraid to grind the **** out of it. grind bout ten the polyester resen with mekp hardner and chop strand fiberglass to fill in what you grinded out. next high tide pull the sails up on new 10 spectra helyards and go hard buddy. see what breaks. should check rivertson rig and if they are ****ty drill them out and put in new monel riverts. you will be right. wear lifejacket and stay close to shore untill your out having the time of your life as hood 20 heaps fun boat. sails at perfect tralwing speed. have fun buddy and ask some questions
