hi mate either engine will work great in this hull as regards the chines if you keep the over hang the same at both sides all will be fine i used a small block plane and a sanding block to get it right .then i used the filler or you can use silicone.just remember to epoxy over it after lol.i used an old credit card and 3 coats of epoxy to coat the outside of the hull and one coat useing a brush inside.im not sure how much w3bby raised his sides maybe 1/2 " not sure but like i said it still sits low so maybe more would be better.the chines hang down from bow to transome( full length).hope this helps if you check all w3bbys pics on that site you will see the chines very clear on his pics.i used his pics as a guide when i built mine as he kindly sent them all to me.hes since put them up there probably as i keep posting them for people to see as they are so well done and clear.strakes wont hurt but like i say it runs well and the wildthing seems to do ok runs like its on rails from what ive seen .the most important thing is to get the hull straight and all will be fine.mines a little smaller at 36" and its submerged drive runs well on a 11 cc plane engine id say mid 30s not bad for a solid shaft submerged drive. ps forgot to say no glass is needed for the hull just good old epoxy slow set i used 3 hr stuff givess you 45 mins work time and takes 3 hrs to dry 24 to set hard though.[img][/img]