I have an existing 4" PVC drain line running through my yard for overflow from the pool and concrete patio. I want to tie into it to drain a planter and gutter downspout that flood nearly on whole side of my house. I dont want to use a standard glue on tee (4 inch is not as flexxy as 1" so it would be tough without digging up a big chunck of yard) and found some bolt on saddle tees but they are special order and pricey. Is there any better solution to teeing into the existing 4" PVC pipe?