Hi mate, having completed Aptitude week only a few weeks back, i'll give you an insight!
Started the week with 25, the lads I went through Raleigh with, lads who were on a holdover course, sideways entry lads and a couple of officers. They can only take 10 people, so as you guessed, 15 dropped out through the week. They dont have to take 10, if only 6 or 8 pass, they'll take 6. The best.
Its a tough week, although I loved every bit of it, its the first time you actually do what you've signed up to do. Expect awkward after awkward, circuits galore, buoy swims, minis, in outs, mud runs, lake swims. But unlike the PEDA, you get to dive. Also Weds and Thurs we were diving till around 11pm, very interesting if you've never night dived before.
Go in confident, take exactly what they give you, team work is essential, unless they state its an individual event ie circuits, stick as a team, one in all in.
Whens your aptitude?
A couple of the lads dropped out on day one, said it just wasnt for them, a couple withdrew from injury and one lad couldnt clear his ears to dive, so is on holdover at the minute.
There wasnt a specific area to which people failed on, but injury does pay a big part, as does the desire to pass the week. If you show that your 100% committed, work as a team and never give in, they'll pass you.
Mud run was hell, thats the only bit of the week I didnt enjoy, im just not built for them ha ha!
Mate, don't worry about the mile and a half, im by no means the quickest, 8.53's my best, aslong as you get under the time, they're not bothered. Its the circuits and everything else that theyre interested in so dont dwell on it.
The seamanships a bit of a chore though, lets hope you have PO Tex Marshall for that course, an absaloute legend, you'll see why if you have him.
Origionally there were 12 "Divers" though Raleigh in my division, 5 of us are on course along with 5 other lads.
Best of luck on your aptitude, you'll probably see my course getting shafted someway or another whilst your down there!