That's a good idea to use a ladder I don't know what spread I am using it was some thing I brought off eBay a long time ago it was about £50 It's not the best but it's a lot better than the Scotts EasyGreen Rotary Lawn Spreader
Listen mate If you’re making a career of this then you are in for the long haul. Trying to aerate with a drill like that is just going to given you a bad back and not a huge impact on the lay in comparison to hollow tine aeration.
I've been too busy with work had no not got any time to make RU-vid videos I've gone from working part-time for a company and doing a small bit of work at the weekends to working for a company and trying to run a business taking on bigger jobs having a couple of people helping me every weekend and I'm having to prioritise things in my life such as work spending time with family I would love to make a load more RU-vid videos it's just I've not got any time however I will be back on RU-vid one day